MC
Mary Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pueblo-County, Colorado
Our Model Tree links this Mary Callahan across the 1920, 1930 and 1940 US Censuses in Pueblo-County, Colorado (XGBoost, ~Confirmed) — first a spouse (b.~1866), then head of a 3-person household.
Age 74
b. ~1866
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pueblo-County, Colorado |
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Pueblo City |
| 1935 Residence (County) | Pueblo |
| Additional Details | |
| Class of Worker | 160 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Pueblo City |
| Est. Birth Year | ~1866 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Callahan | Head | — | 80 | ~1860 |
| Leo Callahan | Son | — | 41 | ~1899 |
| Mary Callahan | Spouse | — | 74 | ~1866 |
Census Appearances
1920
Pueblo, Colorado
Spouse, age 51
Pueblo, Colorado · implied b. ~1869 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Pueblo, Colorado
Spouse, age 61
Pueblo, Colorado · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 20 |
| Father's Birthplace | Free State Ireland |
| Mother's Birthplace | Free State Ireland |
| Occupation | yes |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Pueblo-County, Colorado
Spouse, age 74
Pueblo-County, Colorado · implied b. ~1866 — 3 household members
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Pueblo City |
| 1935 Residence (County) | Pueblo |
| Class of Worker | 160 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 74 · b. ~1866 · Colorado
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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 — Pueblo-County, Colorado
Open full size
1940 US Federal Census — Pueblo-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00476-00304)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Mary Marino | 12 | Daughter | — | Colorado |
| 42 | Robert C Marino | 10 | Son | — | Colorado |
| 43 | Pascal Genaro | 45 | Head | Laborer | Italy |
| 44 | Mary Genaro | 40 | Wife | — | Italy |
| 45 | Alfonso Genaro | 20 | Son | New Worker | Colorado |
| 46 | Lucia Genaro | 18 | Daughter | Office Work | Colorado |
| 47 | Johnny Genaro | 16 | Son | — | Colorado |
| 48 | Fredrick Genaro | 7 | Son | — | Colorado |
| 49 | Anthony Prutch | 27 | Head | Truck Driver | Colorado |
| 50 | Esther Prutch | 24 | Wife | — | Colorado |
| 51 | Charline Prutch | 2 | Daughter | — | Colorado |
| 53 | William J Keaton | 72 | Head | Retired | Texas |
| 54 | Iva Keaton | 71 | Wife | — | Arkansas |
| 55 | Jenny Parlapino | 67 | Head | — | Italy |
| 56 | Mary Aguilera | 39 | Daughter | Dressmaking | Colorado |
| 57 | Carllma Cardinaly | 21 | Granddaughter | Clerk | Colorado |
| 58 | Carl Cardinaly | 18 | Grandson | — | Colorado |
| 59 | James Callahan | 80 | Head | — | Scotland |
| 60 | Mary Callahan THIS PERSON | 74 | Wife | — | Ohio |
| 61 | Leo Callahan | 41 | Son | Gauger Of Wire | Colorado |
| 62 | Russ Pagano | 30 | Head | Baker | Colorado |
| 63 | Constina Pagano | 25 | Wife | — | Colorado |
| 64 | Donald James Pagano | 5 | Son | — | Colorado |
| 65 | Lenord J Alessandro | 21 | Head | Laborer | Colorado |
| 66 | Mary Jo Alessandro | 22 | Wife | — | Colorado |
| 67 | John Chavez | 52 | Head | Laborer | New Mexico |
| 68 | Molly Chavez | 34 | Wife | — | New Mexico |
| 69 | Frank Chavez | 11 | Son | Laborer | Colorado |
| 70 | Rose Chavez | 9 | Daughter | — | New Mexico |
| 71 | Juanita Chavez | 87 | Mother | Pensioner | New Mexico |
| 72 | William Reed | 51 | Head | Laborer | Louisiana |
| 73 | Lucinda Reed | 52 | Wife | — | Missouri |
| 74 | Alferd Griffin | 8 | Cousin | — | Kansas |
| 75 | Linsey Hill | 49 | Boarder | Laborer | Kansas |
| 76 | Eva Taibe | 65 | Head | Owner Beer Tavern | Italy |
| 77 | Joe Taibe | 75 | Husband | — | Italy |
| 78 | Victor P Taibe | 36 | Son | Bar Tender | Colorado |
| 79 | Rose Taibe | 33 | Daughter in law | — | Colorado |
| 80 | Vivian Taibe | 15 | Granddaughter | — | Colorado |
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)