I am not confident I have correctly identified Conrad Eisenhart in the census records.
If I have identified the correct Conrad Eisenhart, he was born in November 1841 (10; 5 (21 in 1865), 7 [73 at death in 1920, if that's the correct Conrad Eisenhart], 8 [see 7], 9 [39 in 1880], 10 [58 in 1900], 11 [68 in 1910]). He was born in Germany (5, 9 [Pennsylvania], 10 [Pennsylvania], 11 [Pennsylvania]).
When he enlisted, he was a segar maker (5).
When he enlisted, he was 5 feet 9 inches tall, and had a dark complexion, hazel eyes, and dark hair (5).
He was a substitute for Patrick Roche (1, 5). He enlisted and was mustered into service on 27 March 1865 (1, 5). He was enlisted for one year, at Chambersburg, Pennsylvania, by Captain Eyster (5). His service was credited to the Seventh Congressional District (5). He was a private, in company G (1, 12).
He received clothing worth $38.33 (5).
In 1880, a Conrad Eisenhart was living at 519 West Philadelphia Street, York, York County, Pennsylvania (9). He was living with his wife Martha, and children Milton, Maggie, Mary Ann, and Henry (9). He was a carpenter (9).
In 1883/1884, Conrad Eisenhart married Ottilia Q [unknown family name] (10, 11). In 1900 and 1910, she had had three children, all of whom were alive (10, 11). This was his second marriage, and her first (11).
In 1900, a Conrad Eisenhart was living at 234 Park Place, York, York County, Pennsylvania (10). He was living with his wife Ottilia, and children Bessie, Theodore, and Chauncey (10). He was a carpenter (10).
In 1910, a Conrad Eisenhart was living at 232 Park Place, York, York County, Pennsylvania (11). He was living with his wife Ottilia, children Theodore and Chauncey, and mother-in-law Sophia Beaver (11). He was a carpenter (11).
He may have died in York in December 1920 (7, 8). If so, he was survived by his wife and three sons (Wesley, Theodore, Chauncey), and two brothers (7,8).
1 Bates, Samuel Penniman. History of Pennsylvania volunteers, 1861-5. Harrisburg: B. Singerly, state printer, 1869-71. 5 volumes. 'Ninety-first regiment', volume 3, pages 186-233. (In the roster)
2 special order 35, HQ 91st PA, 15 June 1865
3 company G, register of deserters (Conrad Eisenhart)
4 company G, list of non-commissioned officers (Conrad Eisenhart)
5 company G, second descriptive roll, [#110] (Conrad Eisenhart)
6 consolidated morning report, 91st Pennsylvania, 4 July 1865 (Eisenhart)
7 [death notice] New Oxford Item, 23 December 1920, page 1 (Conrad Eisenhart--uncertain identification)
8 [death notice] Gettysburg Compiler, Saturday 25 December 1920 (Conrad Eisenhart--uncertain identification)
9 1880 US census, Pennsylvania, York County, York, supervisor's district 7, enumeration district 25, microfilm series T9, film 1207, page 312 = 14 B handwritten (Conrad Eisenhart)
10 1900 US census, Pennsylvania, York, York City, ward 11, supervisor's district 8, enumeration district 200, microfilm series T623, film 1503, page 222 = 12 B handwritten (Conrad Eisenhart)
11 1910 US census, Pennsylvania, York County, York, ward 11, supervisor's district 15, enumeration district 181, microfilm series T624, film 1435, page 232 = 11 B handwritten (Conrad Eisenhart)
12 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Conrad Eisenhart)
|street name||West Philadelphia Street|
|dwelling visit #||113|
|family visit #||115|
|name||Eisenhart Conrad||-, Martha||- Milton F.||- Maggie E.||- Mary Ann||- Henry A.|
|month born if born in year|
|married during year||Carpenter||Keeping House||At School||At School||At School|
|school this year||1||1||1|
|street||Park Place||[the first column is cut off]|
|name||Eisenhart Conrad||Eisenhart Ottilia Q||- Bessie L.||- Theodore G.||- Chauncey B.|
|birth date||Nov 1841||Dec 1856||Dec 1884||Dec 1886||Nov 1889|
|# years married||16||16|
|mother of how many children?||3|
|# of children living||3|
|# years in USA|
|occupation||Carpenter||At School||At School||At School|
|# months not employed||0|
|# months in school||9||9||9|
|free or mortgaged|
|# of farm schedule|
|name||Eisenhart Conrad||- Ottilia||- Theodore||- Chauncey||Beaver Sophia|
|#years present marriage||26||26|
|mother of # children||3||7|
|mother of # living children||3||4|
|father's birthplace||Pennsylvania||Ger German||Pennsylvania||Pennsylvania||Ger German|
|mother's birthplace||Pennsylvania||Ger German||Pennsylvania||Pennsylvania||Ger German|
|nature of industry etc.||Farm machine||carriage factory||carriage factory|
|out of work 15 Apr 1910?||No||No||No|
|# weeks out of work 1909||0||0||0|
|school since 1 Sep 09||No|
|owned free or mortagaged|
|nr on farm schedule|
|civil war vet|
|deaf & dumb|
Conrad Eisenhart, formerly of near East Berlin, died Tuesday aweek at his home in York aged 73 years. He leaves his wife and three sons, and two brothers: Peter Eisenhart, of East Berlin, and J. Frank Eisenhart, of Abbottstown.[Gettysburg Compiler, Saturday 25 December 1920]
Conrad Eisenhart, formerly of this county, died last Tuesday at his home in York aged 73 years. He leaves his wife and three sons, Wesley, Theodore, and Chauncey, all of York; and two brothers, Peter Eisenhart of East Berlin, and J. Frank Eisenhart, of Abbottstown