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Mary Mason — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Alameda, California
Our Model Tree links this Mary Mason across the 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 10-person household.
Age 0
b. ~1930
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Mason |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Alameda City |
| Est. Birth Year | ~1930 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lorain Mason | Daughter | — | 12 | ~1918 |
| Mary Mason | Daughter | — | ~1930 | |
| Alice Mason | Daughter | — | 6 | ~1924 |
| Ralph Mason | Head | — | 44 | ~1886 |
| John Mason | Son | — | 7 | ~1923 |
| Bert Mason | Son | — | 15 | ~1915 |
| Ralph Mason | Son | — | 17 | ~1913 |
| Harold Mason | Son | — | 13 | ~1917 |
| Edward Mason | Son | — | 2 | ~1928 |
| Annie Mason | Spouse | — | 41 | ~1889 |
Census Appearances
1930
Alameda, California
Daughter, age
Alameda, California · implied b. ~1930 — 10 household members
| Surname | Mason |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Daughter, age 11
Alameda-County, California · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Masson |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| Highest Grade | 5 |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mason
Daughter · 1930 · age 0 · b. ~1930 · California
★ You are viewing this record
Sibling
Lorain Mason
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bert Mason
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Mason
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mason
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Mason
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mason
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mason
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
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:1930:15thcensuspopula100unit:0863)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Einar Johnson | 49 | Head | Salesman | Norway |
| 52 | Bertha Johnson | 52 | Wife | — | Norway |
| 53 | Bert Johnson | 15 | Son | — | Minnesota |
| 54 | Donald Johnson | 14 | Son | — | Minnesota |
| 55 | Frank Riscotto | 40 | Head | Helper | California |
| 56 | Gretta Riscotto | 64 | Mother | — | Italy |
| 57 | Dorothy Riscotto | 22 | Niece | — | California |
| 58 | Niccolo Traverso | 42 | Head | Laborer | Italy |
| 59 | Florinda Traverso | 39 | Wife | — | Italy |
| 60 | Fred Traverso | 16 | Son | — | California |
| 61 | Annie Traverso | 12 | Daughter | — | California |
| 62 | Giacomo Traverso | 38 | Head | Laborer | Italy |
| 63 | Orlando Dal Cerro | 34 | Head | Concrete Worker | Italy |
| 64 | Pietro Piazza | 63 | Head | Retired | Italy |
| 65 | Margaret Piazza | 57 | Wife | — | Italy |
| 66 | Bernice Piazza | 22 | Daughter | Information Clerk | California |
| 67 | Paul Piazza | 21 | Son | Bookkeeper | California |
| 68 | Mary Marchetti | 52 | Head | — | Belgium |
| 69 | Oscar Marchetti | 26 | Son | Cabinet Maker | Italy |
| 70 | Julia Marchetti | 23 | Daughter | Clerk | California |
| 71 | Ralph Mason | 44 | Head | Painter | California |
| 72 | Annie Mason | 41 | Wife | — | California |
| 73 | Ralph Jr. Mason | 17 | Son | Printer'S Apprentice | California |
| 74 | Bert Mason | 15 | Son | — | California |
| 75 | Harold Mason | 13 | Son | — | California |
| 76 | Lorain Mason | 12 | Daughter | — | California |
| 77 | John Mason | 7 | Son | — | California |
| 78 | Alice Mason | 6 | Daughter | — | California |
| 79 | Edward Mason | 2 | Son | — | California |
| 80 | Mary E. Mason THIS PERSON | 0 | Daughter | — | California |
| 81 | Agostini Figoni | 49 | Head | Laborer | Italy |
| 82 | Mathilda Figoni | 46 | Wife | — | Italy |
| 83 | Joe Figoni | 24 | Son | — | California |
| 84 | Eddie Figoni | 22 | Son | — | California |
| 85 | Rinaldo Figoni | 19 | Son | — | California |
| 86 | Alice Figoni | 13 | Daughter | — | California |
| 87 | Frank Trande | 45 | Head | Bootblack | Italy |
| 88 | Mike Santina | 41 | Head | Pottery Worker | Italy |
| 89 | Rizzoli Santina | 45 | Wife | — | Italy |
| 90 | John Ezga | 29 | Head | Crate Maker | California |
| 91 | Dorothy Ezga | 24 | Wife | — | California |
| 92 | John Jr. Ezga | 2 | Son | — | California |
| 93 | William Templeman | 64 | Head | Teamster | Scotland |
| 94 | Margaret Templeman | 60 | Wife | — | Ireland |
| 95 | Thomas Cummings | 53 | Brother-in-law | Miner | Ireland |
| 96 | Margaret Cummings | 21 | Niece | — | California |
| 97 | Nan Mccarroll | 21 | Boarder | Stenographer | Ireland |
| 98 | Constance Lawrence | 54 | Head | — | Portugal |
| 99 | Knute Johnson | 47 | Head | Carpenter | Sweden |
| 100 | Emily Wilson | 52 | Wife | — | California |
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)