TC
Thomas Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Nassau-County, New York
Our Model Tree links this Thomas Callahan across the 1930 and 1940 US Censuses in Nassau-County, New York (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Nassau-County, New York |
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Floral Park |
| 1935 Residence (County) | Nassau |
| Additional Details | |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Floral Park |
| Est. Birth Year | ~1924 |
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 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Joseph Callahan | Son | — | 13 | ~1927 |
| Marion Callahan | Daughter | — | 15 | ~1925 |
| Patricia Callahan | Daughter | — | 8 | ~1932 |
| Alice Callahan | Daughter | — | 18 | ~1922 |
| Joseph Callahan | Head | — | 39 | ~1901 |
| Thetta Callahan | Daughter | — | 1 | ~1939 |
| Daniel Callahan | Son | — | 3 | ~1937 |
| Thomas Callahan | Son | — | 16 | ~1924 |
| Mildred Callahan | Spouse | — | 37 | ~1903 |
| James Callahan | Son | — | 10 | ~1930 |
| William Callahan | Son | — | 5 | ~1935 |
Census Appearances
1930
Nassau, New …
Son, age 6
Nassau, New York · implied b. ~1924 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Nassau-County, New …
Son, age 16
Nassau-County, New York · implied b. ~1924 — 11 household members
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Floral Park |
| 1935 Residence (County) | Nassau |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Callahan
Son · 1940 · age 16 · b. ~1924 · New York
★ You are viewing this record
Sibling
Marion Callahan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Callahan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thetta Callahan
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Callahan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Callahan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Callahan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Callahan
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Callahan
Sibling · 1940 · age 8
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
1940 US Federal Census — Nassau-County, New York
Open full size
1940 US Federal Census — Nassau-County, New York
Page Contents
32 people indexed on this census page (nara:1940:m-t0627-02683-00367)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jennie Hensey | 58 | Head | Civil Engineer | New York |
| 2 | Ethel Hensey | 56 | Daughter | — | New York |
| 3 | Arthur Hensey | 25 | Son | — | New York |
| 4 | Paul M. Bentajou | 63 | Head | Salesman | France |
| 5 | Alice Bentajou | 48 | Wife | — | France |
| 6 | Rosanne Shield | 25 | Daughter | Salesclerk | Canada-Eng |
| 7 | Leo Hecker | 53 | Head | Laundress | New York |
| 8 | Frances Hecker | 51 | Wife | Laundress | New York |
| 9 | Rosa Hecker | 85 | Mother | — | Germany |
| 10 | Paul Hesselberg | 57 | Head | Laundry Agt. | Germany |
| 11 | Alma Hesselberg | 47 | Wife | — | New York |
| 12 | Alma Hesselberg | 22 | Daughter | Reg. Nurse | New York |
| 13 | Claire Hesselberg | 20 | Daughter | Bookkeeper | New York |
| 14 | Margaret Hesselberg | 15 | Daughter | — | New York |
| 15 | Paul Hesselberg | 13 | Son | — | New York |
| 16 | Marion Schumacher | 46 | Head | Laborer | New York |
| 17 | Albert Schumacher | 16 | Son | — | New York |
| 18 | Louise Schumacher | 4 | Daughter | — | New York |
| 19 | Joseph Callahan | 39 | Head | Hose Maker | New York |
| 20 | Mildred Callahan | 37 | Wife | — | New York |
| 21 | Alice Callahan | 18 | Daughter | — | New York |
| 22 | Thomas Callahan THIS PERSON | 16 | Son | — | New York |
| 23 | Marion Callahan | 15 | Daughter | — | New York |
| 24 | Joseph Callahan | 13 | Son | — | New York |
| 25 | James Callahan | 10 | Son | — | New York |
| 26 | Patricia Callahan | 8 | Daughter | — | New York |
| 27 | William Callahan | 5 | Son | — | New York |
| 28 | Daniel Callahan | 3 | Son | — | New York |
| 29 | Thetta Callahan | 1 | Daughter | — | New York |
| 30 | Anna Fleischer | 45 | Head | Sewing Machine Oper. | Germany |
| 31 | Doris Fleischer | 15 | Daughter | — | New York |
| 32 | Arvid Ware | 49 | Lodger | Carpenter | Finland |
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)