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John Mason — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Alameda, California
Our Model Tree links this John Mason across the 1910, 1920 and 1930 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 4-person household.
Age 57
b. ~1873
Male
Head
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Mason |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 20 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Additional Details | |
| Occupation | Building Contractor |
| Industry | Buildings |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | 8000 |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Building Contractor |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1873 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Sarah Mason | Daughter | — | 18 | ~1912 |
| Barbara Mason | Daughter | — | 16 | ~1914 |
| John Mason | Head | — | 57 | ~1873 |
| Sarah Mason | Spouse | — | 57 | ~1873 |
Census Appearances
1910
Alameda, California
Head, age 38
Alameda, California · implied b. ~1872 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | California |
| Years Married | 17 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Occupation | Carpenter |
| Industry | house |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Alameda, California
Head, age 46
Alameda, California · implied b. ~1874 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | California |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Occupation | Carpenter |
| Industry | Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Head, age 57
Alameda, California · implied b. ~1873 — 4 household members
| Surname | Mason |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 20 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Occupation | Building Contractor |
| Industry | Buildings |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | 8000 |
| 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 John Mason across 3 US Census years (1910, 1920 and 1930) in Alameda, California, using XGBoost record linkage.
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This person
Anchor record
John Mason
Head · 1930 · age 57 · b. ~1873 · 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:1930:15thcensuspopula107unit:1036)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William A. Mcleod | 64 | Head | Woodsman | Canada-English |
| 2 | Ara G. Mcleod | 64 | Wife | — | Canada-French |
| 3 | Joe Luis | 47 | Head | Laborer | Portugal |
| 4 | Angelina Luis | 45 | Wife | — | Portugal |
| 5 | Dave Levitt | 38 | Head | Tailor | Soviet Russia |
| 6 | Lizzie Levitt | 34 | Wife | — | Soviet Russia |
| 7 | Frances Levitt | 16 | Daughter | — | New York |
| 8 | Samuel Levitt | 13 | Son | — | New York |
| 9 | Ralph Levitt | 11 | Son | — | California |
| 10 | George Kennedy | 43 | Head | Pressman | Illinois |
| 11 | Lanta Kennedy | 40 | Wife | — | Missouri |
| 12 | Harold Ford | 26 | Nephew | Truck Driver | Missouri |
| 13 | Charles Smith | 50 | Head | Stockman | Michigan |
| 14 | Augusta Smith | 49 | Wife | — | Michigan |
| 15 | Thomas Tile | 58 | Head | Money Clerk | Nevada |
| 16 | Charlotte Tile | 50 | Wife | — | Nevada |
| 17 | Lawrence T. Tile | 23 | Son | Time Clerk | California |
| 18 | Jane Cox | 81 | Mother-in-law | — | England |
| 19 | Carlton J. Cox | 9 | Nephew | — | California |
| 20 | Viola G. Ruth | 45 | Head | — | California |
| 21 | Belle M. Scott | 64 | Lodger | — | California |
| 22 | William H. Chick | 48 | Head | Sheet Metal Worker | California |
| 23 | Annie Chick | 44 | Wife | — | California |
| 24 | Bernard Chick | 19 | Son | Common Laborer | California |
| 25 | Ruby Chick | 11 | Daughter | — | California |
| 26 | Betty Chick | 6 | Daughter | — | California |
| 27 | Eleanor Van Horn | 80 | Head | — | Illinois |
| 28 | Alda Van Horn | 58 | Daughter | — | Iowa |
| 29 | Marion Van Horn | 16 | Daughter | — | Iowa |
| 30 | John C. Olson | 64 | Head | Carpenter | Sweden |
| 31 | Cora E. Olson | 55 | Wife | — | Iowa |
| 32 | Gladys Laisance | 25 | Head | Telephone Operator | California |
| 33 | Holly V. Williams | 43 | Head | Truck Driver | Illinois |
| 34 | Ivy E. Williams | 52 | Wife | — | California |
| 35 | Marion Stroud | 22 | Nephew | Laborer | California |
| 36 | Louis F. Overstreet | 52 | Head | Salesman | California |
| 37 | Emily H. Overstreet | 63 | Wife | Librarian | Idaho |
| 38 | Samuel De Fonte | 48 | Head | Blacksmith | Honolulu |
| 39 | Rose De Fonte | 48 | Wife | — | California |
| 40 | Rose De Fonte | 21 | Daughter | Cashier | California |
| 41 | Harry Schulz | 40 | Head | Shipping Clerk | California |
| 42 | Rose Schulz | 38 | Wife | — | California |
| 43 | Harry E. Schulz | 9 | Son | — | California |
| 44 | Edna Kastler | 21 | Niece | Stenographer | California |
| 45 | John F. Mason THIS PERSON | 57 | Head | Building Contractor | California |
| 46 | Sarah Mason | 57 | Wife | — | Canada-English |
| 47 | Sarah D. Mason | 18 | Daughter | — | California |
| 48 | Barbara H. Mason | 16 | Daughter | — | California |
| 49 | John H. Borman | 65 | Head | — | Denmark |
| 50 | Pauline Borman | 51 | Head | Retail Merchant | 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)