MC
Mary Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Tippecanoe-County, Indiana
Our Model Tree links this Mary Callahan across the 1920, 1930 and 1940 US Censuses in Tippecanoe-County, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 6-person household.
Age 60
b. ~1880
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Tippecanoe-County, Indiana |
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | City of Lafayette |
| 1935 Residence (County) | Tippecanoe |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | City Of Lafayette |
| Est. Birth Year | ~1880 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Cornelius Callahan | Head | — | 58 | ~1882 |
| Bernice Callahan | Other | — | 23 | ~1917 |
| Thomas Callahan | Son | — | 24 | ~1916 |
| Joe Callahan | Son | — | 16 | ~1924 |
| Cornelius Callahan | Son | — | 18 | ~1922 |
| Mary Callahan | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Tippecanoe, Indiana
Spouse, age 40
Tippecanoe, Indiana · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary L |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Tippecanoe, Indiana
Spouse, age 50
Tippecanoe, Indiana · implied b. ~1880 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 34 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Tippecanoe-County, Indiana
Spouse, age 60
Tippecanoe-County, Indiana · implied b. ~1880 — 6 household members
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | City of Lafayette |
| 1935 Residence (County) | Tippecanoe |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 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 Mary Callahan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Callahan
Spouse · 1940 · age 60 · b. ~1880 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Tippecanoe-County, Indiana
Open full size
1940 US Federal Census — Tippecanoe-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01098-00131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frances S. Beadle | 74 | Head | Extinguer | New York |
| 2 | Aneta Beadle | 47 | Daughter | Nutritionist | New York |
| 3 | Simon King | 76 | Head | Owner | Germany |
| 4 | Etta King | 62 | Wife | — | Illinois |
| 5 | Cornelius Callahan | 58 | Head | Salesman | Indiana |
| 6 | Mary Callahan THIS PERSON | 60 | Wife | — | Indiana |
| 7 | Cornelius Callahan | 18 | Son | — | Indiana |
| 8 | Joe Callahan | 16 | Son | — | Indiana |
| 9 | Thomas Callahan | 24 | Son | Salesman | Indiana |
| 10 | Bernice Callahan | 23 | Daughter-in-law | Saleslady | Indiana |
| 11 | Percy H. Thompson | 41 | Head | Army Officer | Indiana |
| 12 | Beatrice W. Thompson | 38 | Wife | — | Indiana |
| 13 | Barbara Jean Thompson | 13 | Daughter | — | Kentucky |
| 14 | Joseph James Thompson | 12 | Son | — | Kentucky |
| 15 | Mary Adelaide Thompson | 6 | Daughter | — | Georgia |
| 16 | Richard Paul Thompson | 5 | Son | — | Georgia |
| 17 | J. Frank Smith | 64 | Head | Manager | Indiana |
| 18 | Emma J. Smith | 64 | Wife | — | Indiana |
| 19 | Blanche Emmons | 58 | Head | — | Indiana |
| 20 | Jesse H. Patter | 67 | Head | — | Indiana |
| 21 | Mary H. Patter | 39 | Daughter | Real Estate | Indiana |
| 22 | Lomie Heston | 40 | Head | Manager | Indiana |
| 23 | Dorothy Heston | 40 | Wife | — | Indiana |
| 24 | John Pfrommer | 50 | Head | Bookkeeper | Indiana |
| 25 | Pearl Pfrommer | 35 | Wife | — | Indiana |
| 26 | John Jr. Pfrommer | 17 | Son | — | Indiana |
| 27 | Ruth Pfrommer | 16 | Daughter | — | Indiana |
| 28 | James Pfrommer | 14 | Son | — | Indiana |
| 29 | David Pfrommer | 13 | Son | — | Indiana |
| 30 | Eugene Pfrommer | 11 | Son | — | Indiana |
| 31 | Kendall, Phillip Pfrommer | 16 | Step-son | — | Indiana |
| 32 | Timothy F. Pell | 57 | Head | Clerk | Illinois |
| 33 | Ida Amelia Pell | 47 | Wife | — | Illinois |
| 34 | Richard Eugene Pell | 13 | Son | — | Illinois |
| 35 | George H. Frommer | 52 | Head | Salesman | Indiana |
| 36 | Mary K. Frommer | 51 | Wife | — | Indiana |
| 37 | George N. Frommer | 17 | Son | — | Indiana |
| 38 | Robert E. Frommer | 11 | Son | — | Indiana |
| 39 | Evan M. Clayton | 57 | Head | — | Indiana |
| 40 | George Raymond Clayton | 27 | Son | Office Work | Indiana |
Related Census Records
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)