MH
Margaret Hamilton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Hamilton across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 2-person household.
Age 71
b. ~1869
Female
Head
Born: England
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Hamilton |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1869 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Hamilton | Head | — | 71 | ~1869 |
| William Hamilton | Son | — | 48 | ~1892 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 53
Allegheny, Pennsylvania · implied b. ~1867 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Margaret M. |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | England |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1930
Allegheny, Pennsylvania
Spouse, age 62
Allegheny, Pennsylvania · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1880 |
| Age at First Marriage | 20 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Cleaning |
| Industry | Offices |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Allegheny-County, Pennsylvania
Head, age 71
Allegheny-County, Pennsylvania · implied b. ~1869 — 2 household members
| Surname | Hamilton |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Hamilton 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 Hamilton
Head · 1940 · age 71 · b. ~1869 · Pennsylvania
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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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-03657-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Stanley Klodowski | 40 | Head | Machinist | Pennsylvania |
| 42 | Sophia Klodowski | 34 | Wife | — | Poland |
| 43 | Paul Klodowski | 12 | Son | — | Pennsylvania |
| 44 | Harry Klodowski | 11 | Son | — | Pennsylvania |
| 45 | Stanley Jr. Klodowski | 9 | Son | — | Pennsylvania |
| 46 | Donald Klodowski | 5 | Son | — | Pennsylvania |
| 47 | Thomas Klodowski | 2 | Son | — | Pennsylvania |
| 48 | Laurence Burk | 42 | Head | Brakeman | Pennsylvania |
| 49 | Michael Burk | 41 | Brother | Driller | Pennsylvania |
| 50 | Harry Burk | 39 | Brother | Clothing Presser | Pennsylvania |
| 51 | Mary Burk | 38 | Wife | — | Pennsylvania |
| 55 | Joseph Barton | 50 | Head | Laborer | Pennsylvania |
| 56 | Anna Barton | 48 | Wife | — | Pennsylvania |
| 57 | Ethel Price | 26 | Head | — | Pennsylvania |
| 58 | Shirley Price | 8 | Daughter | — | Pennsylvania |
| 59 | Thomas Price | 5 | Son | — | Pennsylvania |
| 60 | Robert Price | 3 | Son | — | Pennsylvania |
| 61 | Joseph Ludwig | 45 | Head | Laborer | Pennsylvania |
| 62 | Elizabeth Ludwig | 44 | Wife | — | Pennsylvania |
| 64 | Myrtle Metzer | 48 | Head | — | Pennsylvania |
| 65 | Paul Hogan | 27 | Son | Caretaker | Pennsylvania |
| 66 | Marie Hogan | 25 | Daughter | — | Pennsylvania |
| 67 | Julia Johnson | 75 | Mother | — | Pennsylvania |
| 68 | Margaret Hamilton THIS PERSON | 71 | Head | — | England |
| 69 | William B. Hamilton | 48 | Son | Laborer | Pennsylvania |
| 70 | Richard Pease | 49 | Head | Clothing Presser | Pennsylvania |
| 71 | Elizabeth Pease | 47 | Wife | — | Pennsylvania |
| 72 | Edwin Pease | 25 | Son | Laborer | Pennsylvania |
| 73 | Frances Pease | 24 | Wife | — | Pennsylvania |
| 74 | Mary Ann Pease | 3 | Daughter | — | Pennsylvania |
| 75 | Richard Pease | 1 | Son | — | Pennsylvania |
| 76 | Ray Grzebielucka | 33 | Head | Machinist | Pennsylvania |
| 77 | Stella Grzebielucka | 28 | Wife | — | Pennsylvania |
| 78 | Geraldine Grzebielucka | 4 | Daughter | — | Pennsylvania |
| 79 | Mary Besky | 55 | Mother | Clothing Presser | Poland |
| 80 | John Marciniak | 59 | Head | Furnace Man | Poland |
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)