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Thomas Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clearfield-County, Pennsylvania
Our Model Tree links this Thomas Callahan across the 1930 and 1940 US Censuses in Clearfield-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clearfield-County, Pennsylvania |
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Coalport Borough |
| 1935 Residence (County) | Clearfield |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Coalport Borough |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Donald Callahan | Son | — | 11 | ~1929 |
| Gerald Callahan | Son | — | 18 | ~1922 |
| Raymond Callahan | Son | — | 26 | ~1914 |
| Isalene Callahan | Spouse | — | 49 | ~1891 |
| Thomas Callahan | Son | — | 13 | ~1927 |
| Robert Callahan | Son | — | 15 | ~1925 |
| Doris Callahan | Daughter | — | 11 | ~1929 |
| Lawrence Callahan | Son | — | 17 | ~1923 |
| Michael Callahan | Head | — | 49 | ~1891 |
| Edward Callahan | Son | — | 28 | ~1912 |
| Wayne Callahan | Son | — | 5 | ~1935 |
Census Appearances
1930
Clearfield, Pennsylvania
Son, age 3
Clearfield, Pennsylvania · implied b. ~1927 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Clearfield-County, Pennsylvania
Son, age 13
Clearfield-County, Pennsylvania · implied b. ~1927 — 11 household members
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Coalport Borough |
| 1935 Residence (County) | Clearfield |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 13 · b. ~1927 · Pennsylvania
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Sibling
Lawrence Callahan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Callahan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Callahan
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Callahan
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Callahan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Callahan
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Callahan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Callahan
Sibling · 1940 · age 15
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 — Clearfield-County, Pennsylvania
Open full size
1940 US Federal Census — Clearfield-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03470-00080)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Ponish | 19 | Son | Coal Miner | Pennsylvania |
| 2 | Alice Ponish | 15 | Son | — | Pennsylvania |
| 3 | Martin Ponish | 14 | Son | — | Pennsylvania |
| 4 | Helen Ponish | 9 | Daughter | — | Pennsylvania |
| 5 | David Ponish | 4 | Son | — | Pennsylvania |
| 6 | Michael Callahan | 49 | Head | Laborer | Pennsylvania |
| 7 | Isalene | Isalina Callahan | 49 | Wife | — | Pennsylvania |
| 8 | Edward Callahan | 28 | Son | Company Man | Pennsylvania |
| 9 | Raymond Callahan | 26 | Son | Coal Miner | Pennsylvania |
| 10 | Gerald Callahan | 18 | Son | — | Pennsylvania |
| 11 | Lawrence Callahan | 17 | Son | — | Pennsylvania |
| 12 | Robert Callahan | 15 | Son | — | Pennsylvania |
| 13 | Thomas Callahan THIS PERSON | 13 | Son | — | Pennsylvania |
| 14 | Donald Callahan | 11 | Son | — | Pennsylvania |
| 15 | Doris Callahan | 11 | Daughter | — | Pennsylvania |
| 16 | Wayne Callahan | 5 | Son | — | Pennsylvania |
| 17 | Frederick Hyndman | 42 | Head | Laborer Company Man | Pennsylvania |
| 18 | Freda Hyndman | 41 | Wife | — | Pennsylvania |
| 19 | Gerald Hyndman | 13 | Son | — | Pennsylvania |
| 20 | Kenneth Hyndman | 9 | Son | — | Pennsylvania |
| 21 | Ralph Rizener | 37 | Head | Coal Miner | Pennsylvania |
| 22 | Martha Rizener | 34 | Wife | — | Pennsylvania |
| 23 | Ernest Rizener | 15 | Son | — | Pennsylvania |
| 24 | Alvin Rizener | 13 | Son | — | Pennsylvania |
| 25 | Leroy Rizener | 9 | Son | — | Pennsylvania |
| 26 | Andrew Stiles | 47 | Head | Coal Miner | Pennsylvania |
| 27 | Hattie Stiles | 42 | Wife | — | Pennsylvania |
| 28 | Joseph Stiles | 20 | Son | Coal Miner | Pennsylvania |
| 29 | Leonard Stiles | 19 | Son | Coal Miner | Pennsylvania |
| 30 | Bella Stiles | 16 | Daughter | — | Pennsylvania |
| 31 | Lily Stiles | 14 | Daughter | — | Pennsylvania |
| 32 | Dorothy Stiles | 11 | Daughter | — | Pennsylvania |
| 33 | Beadie Stiles | 9 | Daughter | — | Pennsylvania |
| 34 | Jessie Stiles | 6 | Daughter | — | Pennsylvania |
| 35 | Andrew Jr. Stiles | 4 | Son | — | Pennsylvania |
| 36 | Enid | 61 | Sister | — | Pennsylvania |
| 37 | George Ward | 57 | Head | Coal Miner | Pennsylvania |
| 38 | Veda Ward | 51 | Wife | — | Pennsylvania |
| 39 | Louise Ward | 15 | Daughter | — | Pennsylvania |
| 40 | Grace Ward | 13 | Daughter | — | Pennsylvania |
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)