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Mary Frey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Alameda, California
Our Model Tree links this Mary Frey across the 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a spouse (b.~1907), then head of a 7-person household.
Age 23
b. ~1907
Female
Spouse
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 20 |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1907 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ernest Frey | Son | — | 3 | ~1927 |
| Agnes Frey | Spouse | — | 31 | ~1899 |
| William Frey | Son | — | 2 | ~1928 |
| Mary Frey | Spouse | — | 23 | ~1907 |
| Ernest Frey | Head | — | 37 | ~1893 |
| Leland Frey | Son | — | 2 | ~1928 |
| C Frey | Son | — | 1 | ~1929 |
Census Appearances
1930
Alameda, California
Spouse, age 23
Alameda, California · implied b. ~1907 — 7 household members
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 20 |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Spouse, age 32
Alameda-County, California · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fray |
| Given Name | Mary H |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Income (1939) | 0 |
| Highest Grade | H-3 20 |
| 1935 Residence | Same House |
| 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 Frey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frey
Spouse · 1930 · age 23 · b. ~1907 · 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
34 people indexed on this census page (ia:1930:15thcensuspopula103unit:0625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | E. W. Frey | 12 | Daughter | — | California |
| 52 | Sarah J. Tuttle | 72 | Mother-in-law | — | Ohio |
| 53 | Charles F. Mccarthy | 70 | Head | — | California |
| 54 | Elizabeth Mccarthy | 63 | Wife | Social Worker | California |
| 55 | Mary Mccarthy | 31 | Daughter | Key Punch Operator | California |
| 56 | Alice Mccarthy | 28 | Daughter | — | California |
| 57 | Geraldine Mccarthy | 25 | Daughter | — | California |
| 58 | Kathleen Mccarthy | 22 | Daughter | — | California |
| 59 | John Nicholson | 42 | Head | Proprietor | Ireland |
| 60 | Veronica Nicholson | 38 | Wife | — | California |
| 61 | Ross G. Nicholson | 8 | Son | — | California |
| 62 | Elizabeth Nicholson | 7 | Daughter | — | California |
| 63 | Robert Nicholson | 5 | Son | — | California |
| 64 | John Nicholson | 3 | Son | — | California |
| 65 | Peter Hansen | 66 | Head | Carpenter | Denmark |
| 66 | Anna Hansen | 63 | Wife | — | Denmark |
| 67 | Harry Hansen | 34 | Head | Salesman | California |
| 68 | Hilda Hansen | 32 | Wife | — | California |
| 69 | Rita Hansen | 8 | Daughter | — | California |
| 70 | Harry Hansen | 6 | Son | — | California |
| 71 | William P. Hansen | 38 | Head | Salesman | California |
| 72 | Irene Hansen | 33 | Wife | — | California |
| 73 | Ernest J. Mast. Frey | 37 | Head | Merchant | California |
| 74 | Agnes Frey | 31 | Wife | Bookkeeper | California |
| 75 | Ernest J. Frey | 3 | Son | — | California |
| 76 | Leland J. Frey | 2 | Son | — | California |
| 77 | Mary Frey THIS PERSON | 23 | Wife | — | California |
| 78 | William Frey | 2 | Son | — | California |
| 79 | C. C. Frey | 1 | Son | — | California |
| 80 | Arthur Frey | 26 | Head | Clerk | California |
| 81 | L. V. Frey | 25 | Wife | — | California |
| 82 | Robert Clark | 43 | Head | Contractor | California |
| 83 | Irene Clark | 42 | Wife | — | California |
| 84 | Robert Clark | 13 | Son | — | 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)