MH
Mary Hamilton — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Alameda, California
Our Model Tree links this Mary Hamilton across the 1920, 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 5-person household.
Age 34
b. ~1886
Female
Spouse
Born: Idaho
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Alameda, California |
| Surname | Hamilton |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Idaho |
| Father's Birthplace | New York |
| Mother's Birthplace | Utah |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Moreland Precinct 2 |
| Est. Birth Year | ~1886 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Aileen Hamilton | Daughter | — | 6 | ~1914 |
| Gilbert Hamilton | Head | — | 39 | ~1881 |
| Jessie Hamilton | Son | — | 8 | ~1912 |
| Henry Hamilton | Son | — | 9 | ~1911 |
| Mary Hamilton | Spouse | — | 34 | ~1886 |
Census Appearances
1920
Alameda, California
Spouse, age 34
Alameda, California · implied b. ~1886 — 5 household members
| Surname | Hamilton |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Idaho |
| Father's Birthplace | New York |
| Mother's Birthplace | Utah |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Santa Clara, …
Spouse, age 44
Santa Clara, California · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | May F. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Idaho |
| Age at First Marriage | 24 |
| Father's Birthplace | New York |
| Mother's Birthplace | Utah |
| Industry | Housewife |
| Can Read/Write | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Santa-Clara-County, California
Spouse, age 54
Santa-Clara-County, California · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | May L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Idaho |
| 1935 Residence (City) | Santa Clara Township |
| 1935 Residence (County) | Santa Clara |
| Highest Grade | Hs 10 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Hamilton across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hamilton
Spouse · 1920 · age 34 · b. ~1886 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Alameda, California
Open full size
1920 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu147unit:0141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Maud E | 33 | — | None | California |
| 2 | Mary E | 22 | daughter | None | California |
| 3 | Janet | 62 | mother | Laborer | Ohio |
| 4 | William H Horst | 46 | head | Orchardist | California |
| 5 | M Agnes Horst | 42 | wife | None | Ohio |
| 6 | Margaret Horst | 13 | daughter | None | California |
| 7 | M Gertrude Horst | 11 | daughter | None | California |
| 8 | Frederick Horst | 5 | son | None | California |
| 9 | Charles Dimmick | 57 | head | Orchardist | Indiana |
| 10 | Anna Dimmick | 51 | wife | None | Indiana |
| 11 | Laurel Dimmick | 14 | son | None | Indiana |
| 12 | Charles E Lear | 54 | head | Orchardist | Missouri |
| 13 | Lulu Lear | 53 | wife | None | Kentucky |
| 14 | Emma Lear | 25 | daughter | Saleslady | California |
| 15 | Ruth Lear | 22 | daughter | Principal | California |
| 16 | Elmer Lear | 16 | son | None | California |
| 17 | William S Thomas | 48 | head | Doctor | Iowa |
| 18 | Gertrude Thomas | 46 | wife | None | Missouri |
| 19 | John J Pugh | 46 | head | Orchardist | Wales |
| 20 | Kate J Pugh | 47 | wife | None | Wales |
| 21 | Ellen J Pugh | 18 | daughter | None | Washington |
| 22 | Anita Pugh | 17 | daughter | None | Washington |
| 23 | Will Pugh | 16 | son | None | Washington |
| 24 | Catherine Pugh | 14 | daughter | None | Washington |
| 25 | Phoebe Pugh | 12 | daughter | None | Washington |
| 26 | David O Pugh | 10 | son | None | California |
| 27 | Laura M Pugh | 8 | daughter | None | California |
| 28 | Cyrus Cope | 57 | head | Orchardist | Germany |
| 29 | Pauline C Cope | 51 | wife | None | Germany |
| 30 | William J Cope | 20 | son | Orchardist | California |
| 31 | Annie Louise Cope | 19 | daughter | None | California |
| 32 | George Cope | 18 | son | None | California |
| 33 | Paul P Cope | 16 | son | Apprentice | California |
| 34 | Harry Nilsson | 44 | head | Orchardist | Sweden |
| 35 | Anna Nilsson | 44 | wife | None | Germany |
| 36 | Andrew Nilsson | 13 | son | None | California |
| 37 | Hans Nilsson | 6 | son | None | California |
| 38 | Robert Lear | 29 | head | Orchardist | California |
| 39 | Ora Lear | 31 | wife | None | Missouri |
| 40 | Gene Lear | 3 | son | None | California |
| 41 | Gilbert P Hamilton | 39 | head | None | Wisconsin |
| 42 | Mary Hamilton THIS PERSON | 34 | wife | None | Idaho |
| 43 | Henry Hamilton | 9 | son | None | California |
| 44 | Jessie Hamilton | 8 | son | None | California |
| 45 | Aileen Hamilton | 6 | daughter | None | California |
| 46 | George Milovich | 42 | head | Orchardist | Austria |
| 47 | Jeanne Milovich | 33 | wife | None | California |
| 48 | George Milovich | 10 | son | None | California |
| 49 | Bessie Milovich | 8 | daughter | None | California |
| 50 | Bessie Vinegard | 77 | mother in law | None | France |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)