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William Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Indiana
Our Model Tree links this William Callahan across the 1930 and 1940 US Censuses in Washington-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Indiana |
| Surname | Callahan |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Salem City |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Cecil Callahan | Head | — | 45 | ~1895 |
| Charles Callahan | Son | — | 23 | ~1917 |
| William Callahan | Son | — | 15 | ~1925 |
| Donald Callahan | Son | — | 4 | ~1936 |
| Grace Callahan | Spouse | — | 41 | ~1899 |
| Frances Callahan | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Washington, Indiana
Son, age 5
Washington, Indiana · implied b. ~1925 — 33 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Washington-County, Indiana
Son, age 15
Washington-County, Indiana · implied b. ~1925 — 6 household members
| Surname | Callahan |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Washington |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 15 · b. ~1925 · Indiana
★ You are viewing this record
Sibling
Donald Callahan
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Callahan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Callahan
Sibling · 1940 · age 23
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 — Washington-County, Indiana
Open full size
1940 US Federal Census — Washington-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01107-00918)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wilbur Doris Crockett | 14 | son | — | Indiana |
| 2 | Marion June Crockett | 12 | daughter | — | Indiana |
| 3 | Bonnie G Crockett | 9 | daughter | — | Indiana |
| 4 | Evartte Taylor | 40 | Head | Laborer | Indiana |
| 5 | Madge Taylor | 42 | Wife | 0 | Indiana |
| 6 | Herbie Taylor | 22 | son | Attendant | Indiana |
| 7 | Paul Taylor | 18 | son | — | Indiana |
| 8 | Harold G Taylor | 9 | son | — | Indiana |
| 9 | Bonnie Taylor | 21 | daughter in law | 0 | Illinois |
| 10 | Ray Phillip Allen | 27 | Head | Spray Operator | Indiana |
| 11 | Phyllis Allen | 27 | Wife | 0 | Indiana |
| 12 | Betty Lou Allen | 8 | daughter | — | Indiana |
| 13 | William H Griffin | 66 | Head | Band Sawer | Indiana |
| 14 | Bertha A Griffin | 64 | Wife | 0 | Indiana |
| 15 | Cecil Callahan | 45 | Head | Laborer | Kentucky |
| 16 | Grace Callahan | 41 | Wife | 0 | Indiana |
| 17 | Charles Callahan | 23 | son | Laborer | Indiana |
| 18 | Frances Callahan | 17 | daughter | — | Indiana |
| 19 | William Callahan THIS PERSON | 15 | son | — | Indiana |
| 20 | Donald Callahan | 4 | son | — | Indiana |
| 21 | Ezra (X) Lloyd | 48 | Head | Block Saw | Indiana |
| 22 | Fern L Lloyd | 34 | Wife | 0 | Indiana |
| 23 | Jack D Lloyd | 12 | son | — | Indiana |
| 24 | Joe R Lloyd | 12 | son | — | Indiana |
| 25 | Bruce Mcclenon | 46 | Head | Laborer | Indiana |
| 26 | Rose Mcclenon | 36 | Wife | 0 | Indiana |
| 27 | Elmer M Colglazier | 36 | Head | Carber | Indiana |
| 28 | Lula J Colglazier | 30 | Wife | Weaver | Indiana |
| 29 | Betty Jean Colglazier | 9 | daughter | — | Indiana |
| 30 | Sydney Dentler | 39 | Head | Foreman | Kentucky |
| 31 | Ruth E Dentler | 25 | Wife | 0 | Indiana |
| 32 | Betty Ruth Dentler | 6 | daughter | — | Indiana |
| 33 | Richard E Dentler | 3 | son | — | Indiana |
| 34 | Jessie Knight | 37 | Head | Laborer | Indiana |
| 35 | Ella Knight | 40 | Wife | 0 | Indiana |
| 36 | Ruth Meadows | 35 | Head | 0 | Indiana |
| 37 | Carol Jean Meadows | 15 | daughter | — | Indiana |
| 38 | Donald Earl Meadows | 13 | son | — | Indiana |
| 39 | Beatrice Roehner | 33 | sister | 0 | Indiana |
| 40 | Floyd Eugene | 12 | nephew | — | Indiana |
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)