MG
Mary Grant — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Alameda, California
Our Model Tree links this Mary Grant 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 44
b. ~1886
Female
Spouse
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Grant |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | House Wife |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | House Wife |
| Township / Ward | Berkeley City |
| 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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Grant | Daughter | — | 19 | ~1911 |
| Isabelle Grant | Daughter | — | 17 | ~1913 |
| Arthur Grant | Head | — | 42 | ~1888 |
| Arthur Grant | Son | — | 9 | ~1921 |
| Mary Grant | Spouse | — | 44 | ~1886 |
Census Appearances
1920
Alameda, California
Spouse, age 33
Alameda, California · implied b. ~1887 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1904 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Alameda, California
Spouse, age 44
Alameda, California · implied b. ~1886 — 5 household members
| Surname | Grant |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | House Wife |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
Spouse, age 54
Alameda-County, California · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Albany |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Alien |
| Class of Worker | 0 |
| Income (1939) | 0 |
| Highest Grade | 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.
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This person
Anchor record
Mary Grant
Spouse · 1930 · age 44 · b. ~1886 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Alameda, California
Open full size
1930 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel110:0434)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Annie Jensen | 71 | Mother | House Keeper | Sweden |
| 52 | Annie Norden | 38 | Head | Operator | California |
| 53 | Muriel Norden | 12 | Daughter | — | California |
| 54 | Helen Norden | 11 | Daughter | — | California |
| 55 | William Cooley | 52 | Head | Foreman | California |
| 56 | Bertha Cooley | 42 | Wife | House Wife | Iowa |
| 57 | Billy Cooley | 17 | Son | — | California |
| 58 | Archie Cooley | 15 | Son | — | California |
| 59 | Julia Neil | 67 | Mother | House Keeper | Ohio |
| 60 | Giacomo Siri | 51 | Head | Shoe Maker | Italy |
| 61 | Concetta Siri | 49 | Wife | House Wife | Italy |
| 62 | Giacomo Siri | 23 | Son | Salesman | Italy |
| 63 | John Siri | 10 | Son | — | California |
| 64 | Mary Siri | 8 | Daughter | — | California |
| 65 | Laura Roach | 24 | Head | House Wife | Finland |
| 66 | Kasper Kalfayan | 46 | Head | Restaurant | Turkey |
| 67 | Alice Kalfayan | 26 | Wife | House Wife | Turkey |
| 68 | Vaughn Kalfayan | 1 | Daughter | — | California |
| 69 | William H. Gower | 61 | Head | Janitor | Maryland |
| 70 | Gertrude Gower | 51 | Wife | House Wife | Br. West Indies |
| 71 | William H. Gower | 19 | Son | — | California |
| 72 | Mary Gower | 15 | Daughter | — | California |
| 73 | Annie Campbell | 43 | Sister | House Wife | Br. West Indies |
| 74 | Anton Eich | 66 | Head | Gardner | England |
| 75 | Mary Eich | 52 | Wife | House Wife | Virginia |
| 76 | Thomas Rizzuto | 27 | Head | Shoe Maker | California |
| 77 | Concetta Rizzuto | 24 | Wife | House Wife | California |
| 78 | Patricia Rizzuto | 7 | Daughter | — | California |
| 79 | Thomas Rizzuto | 3 | Son | — | California |
| 80 | Matthew Valerga | 28 | Head | Lumberman | Italy |
| 81 | Rose Valerga | 24 | Wife | House Wife | Italy |
| 82 | Giacomo Siri | 52 | Head | Laborer | Italy |
| 83 | Mary Siri | 47 | Wife | House Wife | Italy |
| 84 | John Siri | 22 | Son | — | California |
| 85 | Giacomo Siri | 20 | Son | — | California |
| 86 | Louis Siri | 18 | Son | — | California |
| 87 | Frank Siri | 26 | Son | — | California |
| 88 | William Siri | 27 | Son | Lumberman | Italy |
| 89 | Giacomo Lai | 52 | Head | Grocery | Spain |
| 90 | Josephine Lai | 32 | Wife | House Wife | Spain |
| 91 | Frances Lai | 21 | Daughter | Laborer | Spain |
| 92 | John Lai | 14 | Son | — | Spain |
| 93 | Josephine Lai | 11 | Daughter | — | California |
| 94 | Arthur Grant | 42 | Head | Laundryman | Scotland |
| 95 | Mary Grant THIS PERSON | 44 | Wife | House Wife | Scotland |
| 96 | Mary Grant | 19 | Daughter | Clerk | Scotland |
| 97 | Isabelle Grant | 17 | Daughter | — | California |
| 98 | Arthur Grant | 9 | Son | — | California |
| 99 | Charles Ramsey | 25 | Head | Butcher | California |
| 100 | Eleanor Ramsey | 20 | Wife | House Wife | California |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)