RootsWeb WorldConnect has five gedcom's with a Mahlon S Jones, born 1846 or December 1848, in Bucks County, Pennsylvania, to Henry and Rosanna (or Penninah?) Jones, married Elvina Rotenberger, with six children (Sarah (b. ca 1876), Clara (b. 3 Sep 1877), Lillie (b. Dec 1879), Cora (b. July 1881), Ira Henry (b. 31 Mar 1884), and William (b. 12 June 1889) (accessed 20 September 2010). This is clearly the Mahlon S Jones (1848-1930) who was buried in the Lansdale Cemetery, Lansdale, Montgomery County, Pennsylvania with Elvina R Jones (1848-1924) and Clara R Jones (1877-1966) (Find a grave memorial 37176555 (accessed 17 September 2010)).
Note that a Mahlon H Jones died on 29 September 1916 (unknown birthdate), and was buried in the Hampton National Cemetery, Hampton City, Virginia (Find a grave memorial 3085882, accessed 20 September 2010). This is presumably the Mahlon H Jones who was in the Southern Branch of the National Soldiers Home in 1900 (see 1900 US census, Virginia, Elizabeth City County, supervisor's district 2, enumeration district 8, microfilm series T623, film 1706, page 94 = 2 A handwritten). That Mahlon Jones was born in May 1845, in Pennsylvania, and was a carpenter, and I suspect he is the Philadelphia Mahlon Jones--if not, I have not located the Philadelphia Mahlon Jones in the 1900 census. (I have not found him in the 1910 US census.) That suggests the Philadelphia Mahlon Jones did serve in the Civil War. And according to the Pension index by regiment (available on Footnote), a Mahlon S Jones did serve in company P [?] of the 72nd Pennsylvania infantry (along with H 72 PA Infantry, P 3 and A 183 PA Infantry, and C 3 US Veteran Volunteer Infantry). (A Mahlon S Jones did also serve in company G, 2nd Battalion, US Engineers.) Perhaps examining those pension applications would provide some further information.
I have assumed that the Mahlon S Jones in Philadelphia is the one who enlisted in the 91st Pennsylvania, but that identification is based solely on their locations in 1860, and is uncertain.
He claimed to be 18 years old when he enlisted in 1861 (3). He was actually born in 1844/45 (4 (15 in 1860), 5 [5 in 1850], 6 [24 in 1870], 7 [35 in 1880]). He was born in Pennsylvania (4, 5, 6, 7).
In 1850, he was living in ward 3, Spring Garden, Philadelphia, Pennsylvania (5). He was living with Edward and Sophia Jones (presumably his parents), with Catharine, Henry, John, and Jane Jones (presumably siblings), and with four other people (5). He had attended school within the year (5).
In 1860, he was living in ward 13, Philadelphia, Pennsylvania (4). He was living with Edward, Sophia, Jane, Kate, George, and Jacob Jones (4).
He enlisted and was mustered into service on 28 September 1861 (1, 3). He was enlisted for three years, at Philadelphia, Pennsylvania, by Captain Dye (3). He served as a private in company A (1, 8).
He was discharged on 12 October 1861, on writ of habeas corpus (issued by the Honorable Oswald Thompson, Philadelphia), because he was a minor (1, 3). He was a private in company A (8).
In 1870, he was living in ward 20, Philadelphia, Pennsylvania (6). He was living with Edward and Sophia Jones, and with Kate Williamson and her family, and with George, Walter, and Jane Jones (6). He was a carter (6).
Ih 1880, he was living at 1311 Mervine Street, Philadelphia, Pennsylvania (7). He was living with his wife Harriet, his brother George, and his brother-in-law William Gorges (7). He was a furniture car driver (7).
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) (Mahlon S Jones)
2 Register of men discharged, co.A (Mahlon S Jones)
3 company A descriptive roll, entry 30 (Mahlon S Jones)
4 1860 US census, Pennsylvania, Philadelphia, ward 13, microfilm series M653, film 1163, page 429 = 9 handwritten (Mahlon S Jones)
5 1850 US census, Pennsylvania, Philadelphia, Spring Garden, ward 3, microfilm series M432, film 818, page 469 verso = 940 handwritten (Mahlon S [?] Jones)
6 1870 US census, Pennsylvania, Philadelphia, ward 20, district 63, microfilm series M593, film 1406, pages 160 verso = 83 handwritten to 161 recto = 84 handwritten (Mahlon S Jones)
7 1880 US census, Pennsylvania, Philadelphia, ward 20, supervisor's district 1, enumeration district 394, microfilm series T9, film 1179, pages 146 = 3 C - 4 D handwritten (Mahlon H Jones)
8 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Mahlon S Jones)
| line | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Dwellings visited | 313 | ||||||||||
| Families visited | 32[8] | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| Name | Edward S Jones | Sophia Jones | Catharine A Jones | Mahlon S [?] Jones | Henry I [?] Jones | John H Jones | Jane Jones | Nancy Donald | William Gilbert | Elizabeth Jones | Anne Michaels |
| Age | 33 | 27 | 7 | 5 | 1/12 | 25 | 23 | 60 | 31 | 20 | 21 |
| Sex | M | F | F | M | M | M | F | F | M | F | F |
| Color | |||||||||||
| Occupation of males over 15 years | Carman [?] | Carpenter | Drayman | ||||||||
| Real estate owned | |||||||||||
| Birthplace | Pennsylvania | " " | " " | " " | " " | " " | " " | New Jersey | Pennsylvania | " " | Ireland |
| Married within year | |||||||||||
| Attended school within year | 1 | 1 | |||||||||
| Over 20 & can't read/write | |||||||||||
| Deaf, dumb, blind, etc. |
| line | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Dwelling number | 63 | ||||||
| Family number | 63 | ||||||
| Name | Edward T. Jones | Sophia " | Jane " | Kate " | Mahlon S " | Geo M [?] " | Jacob W " |
| Age | 39 | 37 | 30 | 17 | 15 | 10 | 1 |
| Sex | m | f | f | f | m | m | m |
| Color | |||||||
| Occupation | Carman | Tailoress | Milliners App | ||||
| Value of real estate owned | |||||||
| Value of personal estate | 800 | ||||||
| Place of birth | " [sc. Penna] | " | " | " | " | " | " |
| Married within year | |||||||
| Attended school within year | |||||||
| Cannot read & write | |||||||
| Deaf, dumb, blind, etc. |
| line | 38 | 39 | 40 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Dwelling-house number | 512 | |||||||||
| Family number | 596 | |||||||||
| Name | Jones Edward | - Sophia | Williamson Kate A | Williamson Henry | - Clara | - Edward | Jones Mahlon S | - George | - Walter J. | - Jane O |
| Age | 50 | 48 | 26 | 5 | 2 | 7/12 | 24 | 20 | 11 | 40 |
| Sex | M | F | F | M | F | M | M | M | M | F |
| Color | W | W | W | W | W | W | W | W | W | W |
| Occupation | Carter | Keeps house | Carter | Tailoress | ||||||
| Real estate value | ||||||||||
| Personal estate value | 600 | |||||||||
| Birthplace | Penna | Penna | Penna | Penna | Penna | Penna | Penna | Penna | Penna | Penna |
| Father foreign born | ||||||||||
| Mother foreign born | ||||||||||
| Birth month if born within year | Dec | |||||||||
| Marriage month if married within year | ||||||||||
| Attended school past year | 1 | |||||||||
| Can't read | ||||||||||
| Can't write | ||||||||||
| Deaf, dumb, blind, etc. | ||||||||||
| Male US citizen at least 21 years old | 1 | 1 | ||||||||
| Male US citizen at least 21 years old who can't vote ... |
| line | 50 | 1 | 2 | 3 |
| street name | Mervine St | Mervine Street East Side | ||
| house number | 1311 | |||
| dwelling visit # | 26 | |||
| family visit # | 28 | |||
| name | Jones Mahlon H | Jones Harriet | - George | Gorges William D S |
| color | W | W | W | W |
| sex | M | F | M | M |
| age | 35 | 32 | 29 | 29 |
| month born if born in year | ||||
| relationship | wife | brother | brother in law | |
| single | 1 | 1 | ||
| married | 1 | 1 | ||
| widowed/divorced | ||||
| married during year | ||||
| occupation | Furniture Car Driver | Keeping house | Furniture Car Driver | Carpenter |
| months unemployed | ||||
| currently ill? | ||||
| blind | ||||
| deaf/dumb | ||||
| idiotic | ||||
| insane | ||||
| disabled | ||||
| school this year | ||||
| can't read | ||||
| can't write | ||||
| birthplace | Penna | Penna | Penna | Penna |
| father's birthplace | Penna | Penna | Penna | Penna |
| mother's birthplace | Penna | Penna | Penna | Penna |