Miscellaneous comments
This list does not include people who died after being discharged from the regiment. For example, the 20 December 1863 consolidated morning report claims William Roberts (H) died of wounds received in action, shortly after being discharged for disability. According to the company C descriptive roll, John Stevens (C) had died, but I haven't found this recorded elsewhere--perhaps he died after being transferred to the Veterans' Reserve Corps. And Michael Stufft (G) died after discharge, on 22 Jun 65, but Bates records his death as if he were still in the regiment.
On 28 February 1865, the regiment reported "Conrad" (co.F) died in action or of wounds received in action; I have not been able to identify him.
Suicide
Bender, Louis (H) died at Chester Barracks, PA, on 20 Feb 64. shot himself
Buck, Peter (H) died on 28 Jan 65 by shooting himself while on picket, at Petersburg VA
Crosby, William (G) died in General Hospital, Alexandria VA, by "designedly taking an external application intended for another man", 25 Nov 62
Died (unspecified circumstances)
Faust, Horace (D) died in Bealton VA, 18 Dec 1863 (or 16 Dec?)
Finnegan, Miles (H) died in Alexandria VA, 10 Aug 62
Heller, William (F) died 24 Jun 65
Korkoff, Matthias (D) died on 7 Mar 64
Lever, Elias (I) died on 11 May 1862
Mervins, Robert (C) died Washington DC, 29 May 1865
Died of disease
Aitken, Thomas P (A), died of exposure, Alexandria VA, 1 June 62
Albertson, Thomas (E) died on 20 February 62, at Philadelphia, Pennsylvania, of typhoid fever
Armstrong, Robert (H) died of disease at Chester Barracks Philadelphia PA 11 May 64
Barnhart, Zachariah (C) died Washington, DC 20 May 65
Bernstein, Gustavus (A) died Indiana Hosp., Washington DC, 13 or 14 Apr 62, of typhoid fever
Chambers, Samuel (K) died Annapolis MD on 14 Dec 62 of "bilious pulmonia"
Charmelia, Silas (D/H) died of smallpox, Washington DC, 22 May 62
Chitlick, Henry (C) died Warrenton Junction, VA, 8 Mar 64 of delirium tremens
Clark, James (E) died on 16 March 62, at Washington DC, of typhoid fever
Clutterbuck, John (E) died 3 May 65, of typhoid fever, at City Point Hospital (according to his death certificate; the company muster roll has him dying of diphtheria)
Cole, Francis C (C) died 18 Jun 64, of typhoid fever, at Philadelphia PA
Dell, Francis O [or Francis Odell] (E) died in July 63, at his home in Philadelphia Pennsylvania, of a disease of the lungs contracted from exposure
Dougherty, James (D) died Philadelphia PA, on 24 or 27 Jan 64
Earl, Richard (F) died Camp Stanton, of measles, on 20 Feb 62 (burial record 19 Feb 62)
Eyre, George W (F&S) died Philadelphia PA, 31 Dec 62, of disease
Fetzer, Aaron (F) died in Columbia Hospital, Washington DC, of typhoid fever, on 22 Feb 62
Ginther, David (A) died 8 May 1865, David's Island NY Harbor, of typhus fever; bur. 10 May 1865
Goodwin, John (H) died of typhoid fever in the Division Hospital, at Bealton Station, VA, 10 Dec 63
Harkinson, John (C) died of consumption in Alexandria VA on 11 May 62
Henry, John A (E) died on 3 May 64, at his home in Philadelphia Pennsylvania, while on a veteran's furlough, of disease (burial record 2 May)
Heyser, Nathan (G) died Sharpsburg, MD, of typhoid fever, 6 Nov 62
Hummel, Benneville (H) died of typhoid fever, in Hough Gen'l Hosp, Alexandria VA 26 Jun 65
Hurst, Jerret (A) died on 4 Feb 63, of typhoid fever, in Division Hospital
Hutchings, James (E) died in City Point Hospital, Virginia, on 2 October 1864, of disease
Irvine, David (D) died of "cramp colic", in Philadelphia PA, on 9 or 20 Oct 61
Lutz, William (D) died of sunstroke, in the field, in VA, on 5 or 6 May 64
McCarty, Dennis (E) died on 18 June 1865, of disease
McChain, Lewis W (F) died of delirium tremens, in 91st's hospital, Alexandria VA on 28 July 1862
Nelson, Carl (E) died on 18 June 1865 of disease
Bolon (or Rollin), George (D) died of disease, near Warrenton Junction, VA on 2 Apr 64
Ross, William (H) died at division hosp., Washington, DC, 12 Jun 65 of typhoid fever
Scott, David (D) died of heart disease, in camp near Clouds Mills VA, on 15 or 20 Aug 62
Shriner, Benjamin (A) died of meningitis, Campbell Military Hospital, Washington DC, 5 June 1865
Smith, William (C) died Washington DC, 13 or 14 Mar 62, Camp Stanton, Washington DC, of chronic bronchitis
Spear, John (G) of apoplexy [?] in camp near Beverly Ford VA 8 Aug 63
Stahl, Annanias (B) died of disease on 1 Jul 65
Steinmetz, Andrew (H) died of chronic diarrhea, Carver Hosp, Washington DC, 18 Oct 64
Strauser, John (H) died of illness at Washington DC, 23 Jun 65
Thompson, John (E) died on 8 January 1862, of typhoid fever, at Philadelphia, Pennsylvania
Trotter, John (G) died Philadelphia PA, 11 Aug 63 (possibly 16 Sep 63)
Van Buren, Peter (F) died on 14 Nov 1863, in Washington DC, of chronic diarrhea
Varnasdale, Aaron (D) died of disease, in hospital, on 17 Aug 64
Walters, John (H) died on 27 Dec 61
Webb, George W (E) died of an unknown disease, on 20 August 1864, on Transport Atlantic, while on his way to Philadelphia Pennsylvania
Welsh, Richard (I) died 12 May 65 of pleurisy and pneumonia, at Armory Square Hosp
Whartonby, Daniel (I) died 3 Jun 65 of typhoid fever, at Armory Square Hosp
Whitman, William (D) died of typhoid fever, Alexandria VA, on 18 Jun 62
Williamson, Samuel (G) died of illness, suddenly, Philadelphia PA, 26 April 1865
Willis, William S (E) died on 21 February 1862, in Washington DC, of typhoid fever
Died of wounds received in action
Angel, Harry T (H) died 26 Nov 64, in Bates Hosp, Alexandria VA of wounds received in action 24 Nov 1864
Black, George (H) died of wounds rcvd Chancellorsville, 6 May 1863
Brophy, Lewis [or Louis] (E) died on 23 June 1864 of wounds rcvd at Petersburg, VA, on 18 June 1864, when he was shot in the left temple while charging the enemy's works
Brown, Andrew (C) died 19 Jun 64 of wounds rcvd near Petersburg on 19 Jun 64
Burkett, Charles (H) died in Fredericksburg of wounds rcvd Laurel Hill, 19 May 1864
Closson, James H (H) died of wounds rcvd Hatcher's Run (while charging enemy works), 22 Nov 1864 [Bates has 23 Nov]
Coates, Charles (C) died 27 Nov 64, near Petersburg VA, of wounds rcvd 27 Oct 64
Cooker, John (I) died of wounds rcvd at Chancellorsville, 25 May 63 (or 25 Jun, or during the battle)
Corle, Francis (G) died of wounds rcvd at Hatcher's Run 27 or 29 Oct 64
Crice, Henry C (H) died in City Point, of wounds rcvd Petersburg 24 Jun 64
Drew, Michael (C) died of wounds rcvd in action 20 May 1864
Elder, William (B) died at Washington DC of wounds rcvd at Fredericksburg, 23 Jan 63
Ellingsworth, Robert (E) died of wounds received in action on 23 June 1864 at Petersburg Virginia (flesh wounds in thigh received while charging enemy works); died on 22 September 1864, at Philadelphia Pennsylvania. [Bates lists him as killed in action]
Gallagher, Patrick (B) died at West Philadelphia Hosp, 13 Jun 64, of wounds received in action
Grier, Samuel (D) died of wounds rcvd in action, at Philadelphia, PA, 14 Mar 63
Haughey, Charles (E) died of wounds received at Spottsylvania Court House, Virginia, while charging enemy's works, on 12 May 1864 [Bates and the company descriptive roll report him killed in action; the descriptive roll reports it occurring at Laurel Hill]
Hewitt, David (E) died 14 May 1864, of wounds received at Spottsylvania Court House, Virginia, having been shot in the right thigh while charging the Galt house
Homan, Samuel C (E) died from amputation of leg; was shot in [leg?] 27 October 1864 at Hatcher's Run, 6 Nov 1864
Hood, James (H) died of wounds rcvd Petersburg, 19 Jun 64
Keen, Samuel (D) died of wounds rcvd in action, 18 Jun 64
Keys, John (H) died of wounds rcvd Petersburg, VA, 23 Jun 64
Knox, James (C) died of wounds rcvd in action
Lammey, Lewis (K) died of wounds rcvd at Chancellorsville 26 June 63
Leidheiser, Daniel B (K) died of wounds rcvd in action (shot in leg), 6 June 1864
McGeehan, John (D) died of wounds rcvd at Wilderness, 7 May 64
McKee, William (B) died of wounds rcvd at Petersburg VA, 19 Jun 64
McKinney, James (D) died on transport of wounds [perhaps 26 June] 22 June 64
Mellor, Charles O (E) died on 19 June 1864, of wounds received at Petersburg, VA, having been shot in the breast while charging the enemy's works [perhaps on 18 June 1864]
Miller, Frank (A) died of wounds rcvd at Spottsylvania, 20 May 64
Mills, Joseph (A) died at Washington DC, of wounds received in action at the Battle of Chancellorsville, 17 June 63
Monteith, John (E) died on 12 May 1864, of wounds received at Spottsylvania Court House, Virginia, while charging the enemy's works [Bates and the descriptive roll list him as killed in action]
O'Conner, William (K) died of wounds rcvd in action, 10 May 64
Quick, Albert (A) died of wounds rcvd at Spottsylvania, 22 June 1864, at US Gen'l Hosp, Philadelphia PA
Parks, John (E) died of wounds rcvd at Petersburg, 23 July 1864 (died from amputation of leg)
Parsons, Theodore H (C) died in Georgetown of wounds rcvd on 3 May 63 at Chancellorsville, 26 June 1863
Phillips, George (H) died in Washington DC of wounds rcvd Hatcher's Run VA, 18 Nov 64
Prickett, Joseph H (E) died on 21 June 1864 of wounds he received at Petersburg, on 18 June 1864, having been shot in the head while charging the enemy's works [the descriptive roll has him killed in action]
Rae, James [or Raja, James] (E) died on 4 July 1863 of a cannon shot (shell) in the side, which he received while charging the enemy at Gettsyburg Pennsylvania on 3 July 1863
Reese, Joseph (D) died in the field in VA, of wounds rcvd in action, 12 May 64 or 9 Jun 64
Reynolds, Joseph (D) died in Philadelphia PA of wounds rcvd in action, 24 May 64 or 9 Jun 64
Rusk, John (D) died City Point VA of wounds 22 or 23 Jun 64
Simpson, Thomas (A) died of wounds rcvd at Hatcher's Run, 28 Oct 64
Smith, Charles (B) died of wnds rcvd at North Anna; either 31 Aug 64 or 21 Oct 64
Stackhouse, William (D) died of wounds rcvd at Spottsylvania CH, 3 Jul 64
Stewart, John (C) died of wounds rcvd near Petersburg, 22 June 64
Thompson, James I (H) died of wounds rcvd at Petersburg, 23 Jun 64
Todd, George W (F&S) died of wounds at Fredericksburg VA, 19 Dec 62
Whinna, Stephen (H) died David's Island NY, of wounds in action
Wolf, William (H) died at Alexandria VA of wounds rcvd at Petersburg, 10 July 1864
Died in Confederate prisons
Anorson, John (C) died of marasmus in Andersonville GA on 8 Aug 1864 (in Andersonville Prison)
Appel, Jacob (K) died of starvation in Andersonville on 12 May 64, before 62nd PA was transferred to 91st
Hoffnagle, John (C) died in Andersonville GA on 5 Aug 64 (in Andersonville Prison)
Shinkle, Edward (C) died Richmond VA, 13 Jul 63
Steele, James (K) died in Andersonville, GA on 2 Sep 64 (in Andersonville Prison)
Donnolly, John (C) died Richmond VA, 13 July 63 (in Richmond Prison)
Died by drowning
Campbell, William (H) died by drowning, in Alexandria VA, 31 May 62
Gilliland, James (F) died by drowning, in Philadelphia PA, 20 Nov 61
Mallon, John (K) died by drowning, in Alexandria VA, 26 Apr 62
Killed accidentally
Carrigan, Francis (E) killed accidentally, on 23 May 1865, by being run over by a railroad train, which cut off his left arm and leg
Chism, Robert (K) died of wounds rcvd at Laurel Hill, 2 Jun 1864
Howell, John (G) died at Indiana Hosp, Washington DC, on 25 or 26 Apr 62, of injuries received in a fall
Humphries, Lawrence (H) killed accidentally [or murdered], Washington DC, 16 Apr 62
McLaughlin, William (B) killed accidentally at Philadelphia PA, by a fall, while on duty
Redheffer, Benjamin (A) killed accidentally, by being pulled out of a train, 2 May 1864
Vaughen, Benjamin (B) killed accidentally, at Alexandria VA, 4 July 62, by a fall while in confinement
Killed in action
Andrews, Joseph H (A) killed at Spottsylvania Court House, VA, 12 May 1864
Badini, Sebastian (B) killed at Chancellorsville, VA, 3 May 63
Baird, Alexander (E) killed at Bethesda Church on 1 June 1864; his head was blown off while the regiment was forming a line [Walter claims they were marching through woods in front of a rebel battery that was firing into the woods at close range]
Baker, Ambrose (C) killed near Squirrel Level Road, at Peeble's Farm, VA, 30 Sep 64
Banning, John (C) killed at Chancellorsville 3 May 63
Barnes, Israel H (G) killed at Chancellorsville, VA, 3 May 63
Baumgardner, WH (I) killed at Fredericksburg, VA, 13 Dec 62
Bennett, Henry A (H) killed at Boyndton Road, Hatcher's Run, VA 27 Oct 64
Bisbing, John (C) killed at Chancellorsville 3 May 63
Brown, William (C) died 13 Dec 62, near Fredericksburg, of wounds rcvd at Fredricksburg
Bryson, William (E) killed at Chancellorsville, on 3 May 63, while charging the enemy
Cahill, Patrick (F) killed at Petersburg, VA, 18 June 64
Chambers, Eugene (K) killed at Chancellorsville 3 May 63
Collins, Newton (I) killed at Fredericksburg, VA, 13 Dec 62
Connard, William (F) killed at Laurel Hill, VA, 8 May 64
Connelly, Michael (K) killed at Chancellorsville, VA, 3 May 63
Corle, Jonathan (G) killed at Hatcher's Run, VA, 27 Oct 64
Costello, John (K) killed at Hatcher's Run, VA, 27 Oct 64, by being shot in head
Cox, John (C) killed by a musket ball at Laurel Hill, VA, 8 May 64
Dougherty, William (E) killed while charging the enemy's works at Hatcher's Run, Virginia (shot through the thigh, and then through the head before he could be taken off the field), 27 October 1864
Earnest, Alexander (E) killed in action at Weldon Railroad, Virginia, on 21 Aug 64, while on a skirmish line while acting as safe guard on Weldon Rail Road; shot through head
Edgar, John, Jr. (G) killed at Hatcher's Run, VA, 6 Feb 1865
Fitzsimmons, James (K) killed at Hatcher's Run, VA, 6 Feb 65 by being shot in head
Flynn, John (E) killed in action 31 March 1865, at Boydton Plank Road, by a gun shot wound
Gebler, Joseph (F) killed at Chancellorsville 3 May 63
Godfrey, Amos (A) killed at Fredericksburg VA, 13 Dec 62
Gray, Henry (F) killed at Petersburg, VA, 18 Jun 64
Hall, David (F) killed at Petersburg VA, 18 Jun 64
Hallowell, Thomas (D) killed at Fredericksburg, VA, 13 Dec 62
Hamilton, John (K) killed at Hatcher's Run, VA, 28 Oct 64 by being shot in head
Hooven, William (C) killed near Petersburg VA, 18 June 1864
Johnson, John P (C) killed at Fredericksburg VA, 13 Dec 62
Johnson, Joseph (D) killed at Chancellorsville, VA, 3 May 1863
Johnson, William H (K) killed by being shot in the head, at Petersburg, VA, 18 or 19 Jun 64
Kane, Michael (K) killed at Laurel Hill, VA, 8 May 1864 by being wounded in left breast
Kessler, Joseph (D) killed at Chancellorsville 3 May 63
Lamb, Samuel (F) killed at Petersburg, VA, 1864 June 18
Lynn, Jacob A (B) killed at Chancellorsville, VA, 3 May 1863
Maidre, Rudolph (A) killed at Chancellorsville, VA, 3 May 63
McDermot, James (A) killed at Laurel Hill, VA, 8 May 64
McDermot, Thomas (A) killed at Petersburg VA, 18 Jun 64
McGilley, John (I) killed at Fredericksburg, VA, 13 Dec 62
McMakin, Francis C (E) killed at Chancellorsville, VA, on 3 May 63, while charging the enemy
McNulty, Barney (E) killed at Petersburg, Virginia, on 18 June 64, by being shot in the throat while charging the enemy's works
Miller, Robert (E) died at Chancellorsville, VA, on 3 May 1863, of wounds received while charging the enemy [Bates lists him as killed in action; the descriptive roll lists him simply as "Killed at the Battle"]
Miller, William B (C) killed at Petersburg VA, 18 Jun 64
Molyneaux, J. W. (B) killed at Gettysburg, PA, 2 July 63
Morris, Thomas (C) killed by musket ball at North Anna River VA, 20 May 64
Murphy, George (I) killed at Fredericksburg, VA, 13 Dec 62
O'Connor, Patrick J (D) killed at Gettysburg, PA, 3 Jul 63
Patterson, James (D) killed at Fredericksburg, VA, 13 Dec 62
Patterson, Thomas (corp B) killed at Chancellorsville, 3 May 63
Riley, Thomas D (E) killed at Spottsylvania Court House, Virginia, on 12 May 1864, by being shot in the head while charging the enemy's works
Rodgers, Richard (I) killed at Fredericksburg, VA, 13 Dec 62
Selah, Samuel U (G) killed at Gettysburg, PA, 3 July 1863
Steel, Samuel (D) killed at Fredericksburg 13 Dec 62
Stineman, John (B) killed at Hatcher's Run, VA, 27 Oct 64
Sweeney, Samuel (H) killed at Petersburg, VA, 18 Jun 64
Thomas, Charles (A) killed at Petersburg, VA, 18 Jun 64
Tierney, James (C) killed on picket at Spottsylvania Court House, VA 12 May 64
Troutwine, William (C) killed at Fredericksburg, VA, 13 Dec 62
Wilds, William (D) killed at Fredericksburg, VA, 13 Dec 62
Wilson, Samuel (A) killed, Chancellorsville VA, 3 May 63
Wood, Joshua (E) killed at Hatcher's Run, Virginia, 27 October 1864, while charging the enemy's works: shot through the throat