MG
Mary Grant — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Grant across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 5-person household.
Age 50
b. ~1890
Female
Spouse
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Grant |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1890 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Winifred Grant | Daughter | — | 20 | ~1920 |
| Jean Grant | Daughter | — | 22 | ~1918 |
| Betty Grant | Daughter | — | 18 | ~1922 |
| Peter Grant | Head | — | 52 | ~1888 |
| Mary Grant | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 32
Allegheny, Pennsylvania · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1913 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | scotland |
1930
Allegheny, Pennsylvania
Spouse, age 41
Allegheny, Pennsylvania · implied b. ~1889 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1913 |
| Age at First Marriage | 21 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Allegheny-County, Pennsylvania
Spouse, age 50
Allegheny-County, Pennsylvania · implied b. ~1890 — 5 household members
| Surname | Grant |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Grant across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grant
Spouse · 1940 · age 50 · b. ~1890 · Pennsylvania
★ 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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03669-00246)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry C Eicheldinger | 46 | Head | Electrician | Penna |
| 42 | Anna E Eicheldinger | 51 | Wife | — | Penna |
| 43 | Anna C Eicheldinger | 15 | Daughter | — | Penna |
| 44 | Regis Gallagher | 34 | Head | Electrician | Penna |
| 45 | Mary Q Gallagher | 30 | Wife | — | Penna |
| 46 | Regis Gallagher | 2 | Son | — | Penna |
| 47 | Margaret Mary Gallagher | 1 | Daughter | — | Penna |
| 48 | Carrie E Dickey | 57 | Head | — | Penna |
| 49 | Fletcher W Collins | 54 | Brother | Timekeeper | Penna |
| 50 | Donald J May | 32 | Head | Statistical Clerk | Penna |
| 51 | Mary May | 31 | Wife | — | Penna |
| 52 | Donald B May | 6 | Son | — | Penna |
| 53 | Carol Donna May | 1 | Daughter | — | Penna |
| 54 | Hillis Auen | 37 | Head | Letter Carrier | Penna |
| 55 | Helen Auen | 30 | Wife | — | Penna |
| 56 | Donald Auen | 6 | Son | — | Penna |
| 57 | Richard Auen | 4 | Son | — | Penna |
| 58 | Martin Muenz | 77 | Head | — | Germany |
| 59 | Anna M Stuhna | 54 | Head | — | Czechoslovakia |
| 60 | Peter Stuhna | 20 | Son | Gas Station Attendant | Penna |
| 61 | August Stuhna | 17 | Son | — | Penna |
| 62 | George Jakubick | 76 | Head | — | Czechoslovakia |
| 63 | John Jakubick | 25 | Son | Laborer | Penna |
| 64 | Mary Harkins | 65 | Head | School Teacher | Penna |
| 65 | Sarah E Harkins | 60 | Sister | — | Penna |
| 66 | Peter Grant | 52 | Head | Machinist | Scotland |
| 67 | Mary Grant THIS PERSON | 50 | Wife | — | Scotland |
| 68 | Jean Grant | 22 | Daughter | Stenographer | Penna |
| 69 | Winifred Grant | 20 | Daughter | Stenographer | Penna |
| 70 | Betty Grant | 18 | Daughter | Stenographer | Penna |
| 71 | Henry Lotz | 69 | Head | — | Penna |
| 72 | Emmy Lotz | 64 | Wife | — | Germany |
| 73 | Albert Labonte | 37 | Head | Etcher | New Hampshire |
| 74 | Helen Labonte | 33 | Wife | — | Penna |
| 75 | Clifford E Robinson | 28 | Head | Carpenter | Penna |
| 76 | June C Robinson | 22 | Wife | Salesgirl | Ohio |
| 77 | Maurice Robinson | 55 | Head | Carpenter | Penna |
| 78 | Minnie Robinson | 52 | Wife | — | Penna |
| 79 | John H Schorn | 41 | Head | Service Man | Penna |
| 80 | Catherine Schorn | 44 | Wife | — | Penna |
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)