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John Callahan — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Callahan across the 1900 and 1910 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 11-person household.
Age 45
b. ~1865
Male
Head
Born: Massachusetts
Married
1910 Census Record Details
| Census Year | 1910 |
| Location | Middlesex, Massachusetts |
| Surname | Callahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Years Married | 18 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Industry | City Service |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Marlborough City |
| Est. Birth Year | ~1865 |
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.
11 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Callahan | Daughter | — | 13 | ~1897 |
| Mary Callahan | Daughter | — | 15 | ~1895 |
| Irene Callahan | Daughter | — | 6 | ~1904 |
| Madeline Callahan | Daughter | — | 8 | ~1902 |
| Alice Callahan | Daughter | — | 4 | ~1906 |
| John Callahan | Head | — | 45 | ~1865 |
| Charles Callahan | Son | — | 1 | ~1909 |
| John Callahan | Son | — | 17 | ~1893 |
| Francis Callahan | Son | — | 10 | ~1900 |
| Arthur Callahan | Son | — | 12 | ~1898 |
| Mary Callahan | Spouse | — | 38 | ~1872 |
Census Appearances
1900
Middlesex, Massachusetts
Head, age 34
Middlesex, Massachusetts · implied b. ~1866
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Callahan |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Birth Month | Aug |
| Birth Year | 1866 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Bartender |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Middlesex, Massachusetts
Head, age 45
Middlesex, Massachusetts · implied b. ~1865 — 11 household members
| Surname | Callahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Years Married | 18 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | City Service |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 John Callahan across 2 US Census years (1900 and 1910) in Middlesex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
John Callahan
Head · 1910 · age 45 · b. ~1865 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — Middlesex, Massachusetts
Open full size
1910 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po602unit:0059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence S Fletcher | 22 | Wife | — | Massachusetts |
| 2 | James Fletcher | 1 | Son | — | Massachusetts |
| 3 | Julia C Fletcher | 0 | Daughter | — | Massachusetts |
| 4 | Barbara E Fletcher | 39 | Daughter | Dressmaker | Massachusetts |
| 5 | Bridget A Fletcher | 32 | Daughter | — | Massachusetts |
| 6 | Jessie Fletcher | 30 | Daughter | Clerk Sales | Massachusetts |
| 7 | Catherine G Fletcher | 27 | Daughter | Stenographer | Massachusetts |
| 8 | Elizabeth C Fletcher | 25 | Daughter | Stitcher | Massachusetts |
| 9 | Patrick Fletcher | 23 | Son | Packer | Massachusetts |
| 10 | Jeremiah J Lynch | 37 | Head | Edge Trimmer | Massachusetts |
| 11 | Rose M Lynch | 30 | Wife | — | Massachusetts |
| 12 | Thomas Lynch | 7 | Son | — | Massachusetts |
| 13 | Alice Lynch | 6 | Daughter | — | Massachusetts |
| 14 | Francis Lynch | 4 | Son | — | Massachusetts |
| 15 | Mary A Lynch | 2 | Daughter | — | Massachusetts |
| 16 | Thomas Rowley | 52 | Head | Laborer | Ireland |
| 17 | Annie Rowley | 47 | Wife | — | Ireland |
| 18 | Patrick Rowley | 19 | Son | — | Massachusetts |
| 19 | Thomas Rowley | 15 | Son | Stitcher | Massachusetts |
| 20 | Annie Rowley | 13 | Daughter | — | Massachusetts |
| 21 | Catherine Rowley | 11 | Daughter | — | Massachusetts |
| 22 | Irene M Rowley | 9 | Daughter | — | Massachusetts |
| 23 | Ethel M Bingham | 24 | Head | — | Massachusetts |
| 24 | Leo E Bingham | 24 | Wife | — | Massachusetts |
| 25 | Lillian J C Bingham | 2 | Daughter | — | Massachusetts |
| 26 | Mary O'Brien | 65 | Head | — | Ireland |
| 27 | John O'Brien | 35 | Son | Cutter | Massachusetts |
| 28 | James H O'Brien | 33 | Son | Edge Trimmer | Massachusetts |
| 29 | Robert E O'Brien | 31 | Son | Cutter | Massachusetts |
| 30 | Mary A Murphy | 26 | Niece | Stitcher | Massachusetts |
| 31 | John Callahan THIS PERSON | 45 | Head | Laborer | Massachusetts |
| 32 | Mary E Callahan | 38 | Wife | — | Massachusetts |
| 33 | John J Callahan | 17 | Son | — | Massachusetts |
| 34 | Mary E Callahan | 15 | Daughter | — | Massachusetts |
| 35 | Helen J Callahan | 13 | Daughter | — | Massachusetts |
| 36 | Arthur J Callahan | 12 | Son | — | Massachusetts |
| 37 | Francis J Callahan | 10 | Son | — | Massachusetts |
| 38 | Madeline Callahan | 8 | Daughter | — | Massachusetts |
| 39 | Irene M Callahan | 6 | Daughter | — | Massachusetts |
| 40 | Alice G Callahan | 4 | Daughter | — | Massachusetts |
| 41 | Charles Callahan | 1 | Son | — | Massachusetts |
| 42 | Catherine Callahan | 70 | Head | — | Ireland |
| 43 | Mary E Callahan | 45 | Daughter | — | Massachusetts |
| 44 | Jeremiah J Callahan | 44 | Son | Packer | Massachusetts |
| 45 | James Callahan | 42 | Son | Cutter | Massachusetts |
| 46 | Joseph Somerville | 49 | Head | Machine Operator | English Canada |
| 47 | Annie G Somerville | 47 | Wife | — | Massachusetts |
| 48 | Julia A Somerville | 22 | Daughter | Stitcher | Massachusetts |
| 49 | Joseph J Somerville | 19 | Son | Cutter | Massachusetts |
| 50 | Mary E Somerville | 17 | Daughter | — | Massachusetts |
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)