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Thomas Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Thomas Callahan across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 10-person household.
Age 52
b. ~1888
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Truck Driver |
| Township / Ward | Philadelphia |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| William Callahan | Son | — | 14 | ~1926 |
| Francis Callahan | Son | — | 12 | ~1928 |
| Mary Callahan | Daughter | — | 18 | ~1922 |
| John Callahan | Son | — | 15 | ~1925 |
| James Callahan | Son | — | 13 | ~1927 |
| Catherine Callahan | Daughter | — | 20 | ~1920 |
| Thomas Callahan | Head | — | 52 | ~1888 |
| Gerald Callahan | Son | — | 9 | ~1931 |
| Thomas Callahan | Son | — | 17 | ~1923 |
| Delia Callahan | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Philadelphia, Pennsylvania
Head, age 33
Philadelphia, Pennsylvania · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1909 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Labourer |
| Industry | Foundry |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Philadelphia, Pennsylvania
Head, age 44
Philadelphia, Pennsylvania · implied b. ~1886 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1900 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Retail Merchant |
| Industry | Sea Food |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Philadelphia-County, Pennsylvania
Head, age 52
Philadelphia-County, Pennsylvania · implied b. ~1888 — 10 household members
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Occupation | Truck Driver |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| 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 Thomas Callahan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Callahan
Head · 1940 · age 52 · b. ~1888 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03729-00119)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Harris | 29 | Lodger | Maid | Pennsylvania |
| 42 | Merle Hicks | 35 | Lodger | Maid | South Carolina |
| 43 | Arthur Jackson | 59 | Head | Laborer | Georgia |
| 44 | Essie Jackson | 35 | Wife | Seamstress | Georgia |
| 45 | Lena Morgan | 33 | Lodger | Instructor | Georgia |
| 47 | Max Coplin | 54 | Head | Druggist | Lithuania |
| 48 | Leah Coplin | 51 | Wife | — | Riga |
| 49 | Naomi Coplin | 21 | Daughter | Clerk | Pennsylvania |
| 50 | William Welde | 45 | Head | Clerk | Pennsylvania |
| 51 | Jane F Welde | 44 | Wife | — | Pennsylvania |
| 52 | Alice A Welde | 17 | Daughter | — | Pennsylvania |
| 53 | Matthew T Welde | 13 | Son | — | Pennsylvania |
| 54 | Thomas Black | 75 | Father in law | — | Ireland |
| 55 | John Keys | 36 | Head | Kitchen Man | Georgia |
| 56 | Dola Keys | 29 | Wife | Maid | Georgia |
| 57 | Alonzo B Bruton | 12 | Grandson | — | Pennsylvania |
| 58 | Emma Keys | 54 | Mother | — | Florida |
| 59 | Ellen Lewis | 36 | Lodger | Maid | Pennsylvania |
| 60 | Edward Jackson | 62 | Head | Stevedore | Virginia |
| 61 | Mary Jackson | 48 | Wife | Maid | Virginia |
| 62 | Joseph M Williams | 43 | Lodger | Chemist | Georgia |
| 63 | Alice Jones | 43 | Lodger | Maid | Georgia |
| 64 | Laura Griffin | 19 | Lodger | Maid | Virginia |
| 65 | Thomas Callahan THIS PERSON | 52 | Head | Truck Driver | Ireland |
| 66 | Delia Callahan | 47 | Wife | Cleaner | Ireland |
| 67 | Catherine Callahan | 20 | Daughter | Clerk | Pennsylvania |
| 68 | Mary Callahan | 18 | Daughter | Sales Clerk | Pennsylvania |
| 69 | Thomas Jr Callahan | 17 | Son | Helper | Pennsylvania |
| 70 | John Callahan | 15 | Son | — | Pennsylvania |
| 71 | William Callahan | 14 | Son | — | Pennsylvania |
| 72 | James Callahan | 13 | Son | — | Pennsylvania |
| 73 | Francis Callahan | 12 | Son | — | Pennsylvania |
| 74 | Gerald Callahan | 9 | Son | — | Pennsylvania |
| 75 | Joseph Rochman | 78 | Head | Shoemaker | Russia |
| 76 | Florence Rochman | 77 | Wife | — | Russia |
| 77 | Gertrude Rochman | 40 | Daughter | Cigar Maker | Russia |
| 78 | Katie Rochman | 38 | Daughter | Sales Clerk | Russia |
| 79 | Albert Rochman | 35 | Son | Clerk | Russia |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)