MH
Margaret Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Hart across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 3-person household.
Age 53
b. ~1887
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1887 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Maurice Hart | Head | — | 56 | ~1884 |
| John Hart | Son | — | 16 | ~1924 |
| Margaret Hart | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 34
Allegheny, Pennsylvania · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Allegheny, Pennsylvania
Spouse, age 45
Allegheny, Pennsylvania · implied b. ~1885 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 24 |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Allegheny-County, Pennsylvania
Spouse, age 53
Allegheny-County, Pennsylvania · implied b. ~1887 — 3 household members
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 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 Margaret Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Hart
Spouse · 1940 · age 53 · b. ~1887 · 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-t0627-03676-00033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Giovina Memmo | 27 | Wife | — | Pennsylvania |
| 42 | Emilio Jr Memmo | 6 | Son | — | Pennsylvania |
| 43 | Ernest Memmo | 2 | Son | — | Pennsylvania |
| 44 | John Zierdan | 45 | Head | Stationary Fireman | Pennsylvania |
| 45 | Tillie Zierdan | 40 | Wife | — | Pennsylvania |
| 46 | John Jr Zierdan | 12 | Son | — | Pennsylvania |
| 47 | Ervin Baumbach | 23 | Stepson | Laborer | Pennsylvania |
| 48 | Hazel Baumbach | 21 | Daughter | Stenographer | Pennsylvania |
| 49 | Edna Hungreld | 42 | In law | Ledger Clerk | Pennsylvania |
| 50 | Homer A. Sutak | 59 | Head | Order Clerk | Pennsylvania |
| 51 | Jessie B Sutak | 54 | Wife | — | Pennsylvania |
| 52 | John H. Walker | 66 | Head | — | Pennsylvania |
| 53 | Margaret H Walker | 56 | Wife | — | Pennsylvania |
| 54 | Harry Fellows | 34 | Head | Butcher | England |
| 55 | Margaret Fellows | 25 | Wife | — | Pennsylvania |
| 56 | Margaret Fellows | 2 | Daughter | — | Pennsylvania |
| 57 | Clarence Walker | 28 | Head | Laborer | Pennsylvania |
| 58 | Jane Walker | 24 | Wife | — | Pennsylvania |
| 59 | Clarence Jr Walker | 4 | Son | — | Pennsylvania |
| 60 | Harry Lange | 27 | Head | Laborer | Pennsylvania |
| 61 | Hazel Lange | 26 | Wife | — | Pennsylvania |
| 62 | Harry Jr Lange | 7 | Son | — | Pennsylvania |
| 63 | Edna Lange | 1 | Daughter | — | Pennsylvania |
| 64 | Maurice Hart | 56 | Head | Machinist | Illinois |
| 65 | Margaret Hart THIS PERSON | 53 | Wife | — | Ohio |
| 66 | John F Hart | 16 | Son | — | Pennsylvania |
| 67 | William Tilka | 31 | Head | Carpenter | Pennsylvania |
| 68 | Evelyn Tilka | 30 | Wife | — | Pennsylvania |
| 69 | Loyall. Leslie | 56 | Head | Machinist | Pennsylvania |
| 70 | Freda Leslie | 53 | Wife | — | Pennsylvania |
| 71 | Loyall Jr Leslie | 20 | Son | Messenger | Pennsylvania |
| 72 | Lester Showalter | 41 | Head | Science Teacher | Pennsylvania |
| 73 | Gladys Showalter | 41 | Wife | — | Pennsylvania |
| 74 | William G Plass | 61 | Head | Store Owner | Pennsylvania |
| 75 | Helen C. Plass | 44 | Wife | Retail Grocery | Pennsylvania |
| 76 | Hebert C Wilson | 52 | Head | Sales Clerk | Canada-English |
| 77 | Henrietta Wilson | 53 | Wife | — | Maryland |
| 78 | Robert J Wilson | 20 | Son | Service Station Attendant | Pennsylvania |
| 79 | David T Wilson | 18 | Son | — | Pennsylvania |
| 80 | Donald A Wilson | 17 | Son | — | 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)