WC
William Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, New York
Our Model Tree links this William Callahan across the 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 10-person household.
Age 18
b. ~1922
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Callahan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Buffalo City |
| Est. Birth Year | ~1922 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| James Callahan | Son | — | 22 | ~1918 |
| Francis Callahan | Son | — | 9 | ~1931 |
| Lucy Callahan | Spouse | — | 48 | ~1892 |
| Edward Callahan | Son | — | 12 | ~1928 |
| Charles Callahan | Head | — | 50 | ~1890 |
| William Murphy | Other | — | 46 | ~1894 |
| James Murphy | Other | — | 50 | ~1890 |
| William Callahan | Son | — | 18 | ~1922 |
| Mary Callahan | Daughter | — | 6 | ~1934 |
| Charles Murphy | Other | — | 44 | ~1896 |
Census Appearances
1930
Erie, New …
Other, age 8
Erie, New York · implied b. ~1922 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | William |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Erie-County, New …
Son, age 18
Erie-County, New York · implied b. ~1922 — 10 household members
| Surname | Callahan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 William Callahan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Callahan
Son · 1940 · age 18 · b. ~1922 · New York
★ You are viewing this record
Sibling
James Callahan
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Callahan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Callahan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Callahan
Sibling · 1940 · age 6
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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02839-00176)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dorothy Whetstone | 12 | Daughter | 40 | New York |
| 2 | Ronald Whetstone | 2 | Grandson | — | New York |
| 3 | Joseph Carberry | 51 | Head | Weighman | New York |
| 4 | Ruth Carberry | 46 | Wife | — | New York |
| 5 | Mary Ann Carberry | 17 | Daughter | — | New York |
| 6 | Mary Carberry | 48 | Daughter | — | New York |
| 7 | John T. Carberry | 19 | Son | Butcher | New York |
| 8 | William Zeith | 28 | Head | Weighmaster | Vermont |
| 9 | Lola Zeith | 30 | Wife | — | Canada English |
| 10 | William Zeith | 6 | Son | — | New York |
| 11 | Martha May Zeith | 3 | Daughter | — | New York |
| 12 | Emma Schlieder | 55 | Head | — | Germany |
| 13 | Charles Lambert | 30 | Head | Teacher | New York |
| 14 | Edith Lambert | 28 | Wife | Manager | Germany |
| 15 | William Tarbox | 24 | Head | Tester | New York |
| 16 | Irene Tarbox | 20 | Wife | — | New York |
| 17 | William R. Daniels | 64 | Head | Attorney | New York |
| 18 | Elizabeth Daniels | 63 | Wife | — | New York |
| 19 | Elizabeth Daniels | 39 | Daughter | — | New York |
| 20 | Charles Callahan | 50 | Head | Supervisor | New York |
| 21 | Lucy Callahan | 48 | Wife | — | New York |
| 22 | James Callahan | 22 | Son | Janitor Department | New York |
| 23 | William Callahan THIS PERSON | 18 | Son | — | New York |
| 24 | Edward Callahan | 12 | Son | — | New York |
| 25 | Francis Callahan | 9 | Son | — | New York |
| 26 | Mary Lou Callahan | 6 | Daughter | — | New York |
| 27 | James Murphy | 50 | Brother-in-law | Machinist | Canada English |
| 28 | William Murphy | 46 | Brother-in-law | Driver | New York |
| 29 | Charles Murphy | 44 | Brother-in-law | — | New York |
| 30 | Max Friedland | 57 | Head | Clerk | Russia |
| 31 | Sara Friedland | 52 | Wife | — | New York |
| 32 | Leon Friedland | 25 | Son | Salesman | New York |
| 33 | Charles A. Murphy | 39 | Head | Policeman | New York |
| 34 | Netta Murphy | 37 | Wife | — | Scotland |
| 35 | James Murphy | 9 | Son | — | New York |
| 36 | Janeen Murphy | 4 | Daughter | — | New York |
| 37 | Stanley Herman | 48 | Head | Designer | Kentucky |
| 38 | Emma Herman | 37 | Wife | — | Kentucky |
| 39 | Eugene Herman | 17 | Son | — | Kentucky |
| 40 | Charles Herman | 15 | Son | — | Massachusetts |
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)