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James Mcmahon — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Merrimack, New Hampshire
Our Model Tree links this James Mcmahon across the 1900 and 1910 US Censuses in Merrimack, New Hampshire (XGBoost, ~Confirmed) — first a son (b.~1888), then head of a 15-person household.
Age 22
b. ~1888
Male
Son
Born: Ireland
Single
1910 Census Record Details
| Census Year | 1910 |
| Location | Merrimack, New Hampshire |
| Surname | McMahon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Section Man |
| Industry | Railroad |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Section Man |
| Township / Ward | Concord City Part Of |
| Est. Birth Year | ~1888 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
15 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcmahon | Daughter | — | 21 | ~1889 |
| Susan Mcmahon | Daughter | — | 18 | ~1892 |
| Beatrice Mcmahon | Daughter | — | 4 | ~1906 |
| Pauline Mcmahon | Daughter | — | 1 | ~1909 |
| Katherine Mcmahon | Daughter | — | 11 | ~1899 |
| Veronica Mcmahon | Daughter | — | 12 | ~1898 |
| Margaret Mcmahon | Daughter | — | 5 | ~1905 |
| Walter Mcmahon | Head | — | 47 | ~1863 |
| Walter Mcmahon | Son | — | 14 | ~1896 |
| James Mcmahon | Son | — | 22 | ~1888 |
| Paul Mcmahon | Son | — | 7 | ~1903 |
| John Mcmahon | Son | — | 16 | ~1894 |
| Martin Mcmahon | Son | — | 19 | ~1891 |
| Raymond Mcmahon | Son | — | 9 | ~1901 |
| Susan Mcmahon | Spouse | — | 41 | ~1869 |
Census Appearances
1900
Merrimack, New …
Son, age 13
Merrimack, New Hampshire · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | Jan |
| Birth Year | 1887 |
| Year of Immigration | 1888 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | At school |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Merrimack, New …
Son, age 22
Merrimack, New Hampshire · implied b. ~1888 — 15 household members
| Surname | McMahon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Section Man |
| Industry | Railroad |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links James Mcmahon across 2 US Census years (1900 and 1910) in Merrimack, New Hampshire, using XGBoost record linkage.
Show:
This person
Anchor record
James Mcmahon
Son · 1910 · age 22 · b. ~1888 · New Hampshire
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Sibling
Pauline Mcmahon
Sibling · 1910 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Mcmahon
Sibling · 1910 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Mcmahon
Sibling · 1910 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mcmahon
Sibling · 1910 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcmahon
Sibling · 1910 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mcmahon
Sibling · 1910 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Mcmahon
Sibling · 1910 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veronica Mcmahon
Sibling · 1910 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Mcmahon
Sibling · 1910 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susan Mcmahon
Sibling · 1910 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Mcmahon
Sibling · 1910 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcmahon
Sibling · 1910 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — Merrimack, New Hampshire
Open full size
1910 US Federal Census — Merrimack, New Hampshire
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po864unit:1120)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret E. Kelleher | 57 | Head | — | New Hampshire |
| 2 | Mary M. Kelleher | 27 | Daughter | Book Binder | New Hampshire |
| 3 | Walter Mcmahon | 47 | Head | Car Inspector | Ireland |
| 4 | Susan Mcmahon | 41 | Wife | — | Ireland |
| 5 | James Mcmahon THIS PERSON | 22 | Son | Section Man | Ireland |
| 6 | Mary Mcmahon | 21 | Daughter | Milliner | New Hampshire |
| 7 | Martin H. Mcmahon | 19 | Son | Driver | New Hampshire |
| 8 | Susan M. Mcmahon | 18 | Daughter | — | New Hampshire |
| 9 | John J. Mcmahon | 16 | Son | — | New Hampshire |
| 10 | Walter L. Mcmahon | 14 | Son | — | New Hampshire |
| 11 | Veronica Mcmahon | 12 | Daughter | — | New Hampshire |
| 12 | Katherine Mcmahon | 11 | Daughter | — | New Hampshire |
| 13 | Raymond G. Mcmahon | 9 | Son | — | New Hampshire |
| 14 | Paul R. Mcmahon | 7 | Son | — | New Hampshire |
| 15 | Margaret Mcmahon | 5 | Daughter | — | New Hampshire |
| 16 | Beatrice M. Mcmahon | 4 | Daughter | — | New Hampshire |
| 17 | Pauline F. Mcmahon | 1 | Daughter | — | New Hampshire |
| 18 | Irving P. Quimby | 53 | Head | Paymaster | New Hampshire |
| 19 | Marie B. Quimby | 17 | Daughter | — | New Hampshire |
| 20 | Ida M. Donley | 39 | Housekeeper | Housekeeper | Connecticut |
| 21 | James H. Welch | 40 | Head | Liquor Dealer | New Hampshire |
| 22 | Emma L. Welch | 34 | Wife | — | Vermont |
| 23 | Ida M. Welch | 15 | Daughter | — | New Hampshire |
| 24 | Emma E. Welch | 12 | Daughter | — | New Hampshire |
| 25 | Dorothy M. Welch | 4 | Daughter | — | New Hampshire |
| 26 | Henry Welch | 2 | Son | — | New Hampshire |
| 27 | Leo D. Welch | 0 | Son | — | New Hampshire |
| 28 | Charles E. La More | 22 | Brother-in-law | Blacksmith | Vermont |
| 29 | Mary La More | 58 | Mother-in-law | — | Canada (Fr) |
| 30 | Thomas E. Looney | 33 | Head | Pressman | Massachusetts |
| 31 | Ella G. Looney | 33 | Wife | — | Massachusetts |
| 32 | Mary Looney | 1 | Daughter | — | New Hampshire |
| 33 | Johanna Mooney | 72 | Mother-in-law | — | Newfoundland |
| 34 | George Wollom | 38 | Head | Yardman | Roumania |
| 35 | Minne Wollom | 31 | Wife | — | Ireland |
| 36 | Joseph Wollom | 7 | Son | — | Massachusetts |
| 37 | George Morrison | 26 | Head | Machinist | New Hampshire |
| 38 | Eva L. Morrison | 20 | Wife | — | New Hampshire |
| 39 | Cyril T. Morrison | 1 | Son | — | New Hampshire |
| 40 | Emily W. Marsh | 58 | Mother-in-law | — | Denmark |
| 41 | George H. Wilcox | 37 | Head | Tower Man | Vermont |
| 42 | Harriet R. Wilcox | 35 | Wife | — | Vermont |
| 43 | Ruth H. Wilcox | 12 | Daughter | — | New Hampshire |
| 44 | Dorothea A. Wilcox | 8 | Daughter | — | New Hampshire |
| 45 | Alvin A. Bolies | 47 | Head | Laborer | New York |
| 46 | Etta A. Bolies | 41 | Wife | — | Vermont |
| 47 | Henry Bolies | 18 | Son | Laborer | New Hampshire |
| 48 | Julia Smith | 35 | Lodger | House Work | Ireland |
| 49 | Margaret Smith | 4 | Lodger | — | New Hampshire |
| 50 | — | None | — | — | — |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)