TC
Thomas Callahan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Thomas Callahan across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents Catherine — first a head (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | CALLAHAN |
| Given Name | THOMAS |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Clerk |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 16 |
| Income (1939) | 866 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Clerk |
| Township / Ward | St Paul |
| Est. Birth Year | ~1896 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Agnes Callahan | Spouse | — | 44 | ~1896 |
| Thomas Callahan | Son | — | 8 | ~1932 |
| Thomas Callahan | Head | — | 44 | ~1896 |
| Rose Callahan | Daughter | — | 19 | ~1921 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 24
Ramsey, Minnesota · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Office |
| Industry | Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Head, age 34
Ramsey, Minnesota · implied b. ~1896 — 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 | 34 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 24 |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Deliveryman |
| Industry | Dry Cleaning Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Veteran | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Head, age 44
Ramsey-County, Minnesota · implied b. ~1896 — 4 household members
| Surname | CALLAHAN |
| Given Name | THOMAS |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul |
| 1935 Residence (County) | Ramsey |
| Occupation | Clerk |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 16 |
| Income (1939) | 866 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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. Identified parents: mother Catherine Callahan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Catherine Callahan
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Callahan
Head · 1940 · age 44 · b. ~1896 · Minnesota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01998-00608)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald Johnson | 26 | Head | Driver | Iowa |
| 2 | Elaine Johnson | 22 | Wife | — | Minnesota |
| 3 | James Johnson | 2 | Son | — | Minnesota |
| 4 | Theresa Johnson | 55 | Head | — | Minnesota |
| 5 | Lydia Johnson | 26 | Daughter | Clerk | Minnesota |
| 6 | Edward Smail | 26 | Head | Laborer | Minnesota |
| 7 | Helen Wilson | 24 | Head | Beauty Operator | Minnesota |
| 8 | Lois Wilson | 6 | Daughter | — | Minnesota |
| 9 | Minnie Christensen | 64 | Mother | — | Minnesota |
| 10 | Kathleen Cooper | 47 | Head | — | Canada-English |
| 11 | Patricia Cooper | 23 | Daughter | Cashier | Canada-English |
| 12 | Lionel Hanratty | 30 | Head | Janitor | Canada-English |
| 13 | Agnes Hanratty | 25 | Wife | — | Minnesota |
| 14 | Richard Neumann | 22 | Head | Driver | Minnesota |
| 15 | Adair Neumann | 19 | Wife | — | Minnesota |
| 16 | Thomas Callahan THIS PERSON | 44 | Head | Clerk | Minnesota |
| 17 | Agnes Callahan | 44 | Wife | — | Minnesota |
| 18 | Rose Callahan | 19 | Daughter | — | Minnesota |
| 19 | Thomas Callahan | 8 | Son | — | Minnesota |
| 20 | Ethel Brink | 23 | Head | — | Minnesota |
| 21 | Helen Schmidt | 26 | Sister | Waitress | Minnesota |
| 22 | George Schmidt | 6 | Nephew | — | Minnesota |
| 23 | Sandra Schmidt | 3 | Niece | — | Minnesota |
| 24 | Christian Ek | 67 | Head | Blacksmith | Sweden |
| 25 | Marie Ek | 60 | Wife | — | Sweden |
| 26 | George Roberts | 45 | Head | — | Minnesota |
| 27 | Minnie Roberts | 38 | Wife | Clerk | Minnesota |
| 28 | Wilmer Harris | 30 | Head | Driver | Montana |
| 29 | Hilder Harris | 30 | Wife | — | Minnesota |
| 30 | Wilmer Harris | 7 | Son | — | Minnesota |
| 31 | Patricia Harris | 5 | Daughter | — | Minnesota |
| 32 | Carl Titland | 32 | Head | Painter | Norway |
| 33 | Ruth Titland | 25 | Wife | — | Minnesota |
| 34 | Rudolph Koelkert | 44 | Head | Fireman | Minnesota |
| 35 | Artheal Koelkert | 30 | Wife | — | Wisconsin |
| 36 | Alma Smith | 45 | Head | Stenographer | Minnesota |
| 37 | Gerald Smith | 14 | Son | — | Minnesota |
| 38 | Dorothy Keller | 42 | Head | Stenographer | Minnesota |
| 39 | Elenor Keller | 44 | Sister | Bookkeeper | Minnesota |
| 40 | Francis Iley | 51 | Head | Supervisor | Maryland |
Pedigree Summary
Thomas
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)