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Florence Williams — 1930 US Census Record
Model Tree available1930 United States Federal Census · Alameda, California
Our Model Tree links this Florence Williams across the 1910, 1920 and 1930 US Censuses in Alameda, California (XGBoost, ~Confirmed), with identified parents James & James — first a daughter (b.~1910), then head of a 7-person household.
Age 20
b. ~1910
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Williams |
| Given Name | Florence |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nevada |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Typist |
| Industry | Ins. office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Typist |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1910 |
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 Florence | Age | Birth yr |
|---|---|---|---|---|
| Geraldine Williams | Daughter | — | 9 | ~1921 |
| Florence Williams | Daughter | — | 20 | ~1910 |
| James Williams | Head | — | 53 | ~1877 |
| Mary Mason | Other | — | 66 | ~1864 |
| Chester Williams | Son | — | 24 | ~1906 |
| Gordon Williams | Son | — | 13 | ~1917 |
| Gertrude Williams | Spouse | — | 46 | ~1884 |
Census Appearances
1910
Alameda, California
Daughter, age
Alameda, California · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Florence E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Virginia |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Alameda, California
Daughter, age 10
Alameda, California · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Florence E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nevada |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Daughter, age 20
Alameda, California · implied b. ~1910 — 7 household members
| Surname | Williams |
| Given Name | Florence |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nevada |
| Mother's Birthplace | California |
| Occupation | Typist |
| Industry | Ins. office |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Florence Williams across 3 US Census years (1910, 1920 and 1930) in Alameda, California, using XGBoost record linkage. Identified parents: father James Williams (~0.92 confidence) and father James Williams (~0.92 confidence) and mother Gertrude Williams (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Williams
b. ~1873
Source father
● Household
· direct · ~0.92
Father
James Williams
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Gertrude Williams
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Florence Williams
Daughter · 1930 · age 20 · b. ~1910 · California
★ You are viewing this record
Sibling
Gordon Williams
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chester Williams
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Williams
Sibling · 1930 · age 9
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
22 people indexed on this census page (ia:1930:15thcensuspopula102unit:0428)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | James R Williams | 53 | Head | Iron Worker | Nevada |
| 52 | Gertrude Williams | 46 | Wife | — | California |
| 53 | Chester Williams | 24 | Son | Butcher | California |
| 54 | Florence Williams THIS PERSON | 20 | Daughter | Typist | California |
| 55 | Gordon Williams | 13 | Son | — | California |
| 56 | Geraldine Williams | 9 | Daughter | — | California |
| 57 | Mary Mason | 66 | Mother-in-law | Housekeeper | California |
| 58 | Peter Randlow | 67 | Head | Ship Joiner | Denmark |
| 59 | Jennie Randlow | 58 | Wife | — | Denmark |
| 60 | Carl Randlow | 30 | Son | Salesman | Illinois |
| 61 | Paul Chivello | 50 | Head | Laborer | Italy |
| 62 | Salvatore Chivello | 27 | Son | Merchant | Italy |
| 63 | Nick Chivello | 20 | Son | Salesman | California |
| 64 | Antone Chivello | 18 | Son | Salesman | California |
| 65 | Joseph Chivello | 14 | Son | — | California |
| 66 | Charles Castagnaro | 39 | Head | Engineer | California |
| 67 | Madeline Castagnaro | 33 | Wife | — | California |
| 68 | Charles Jr. Castagnaro | 12 | Son | — | California |
| 69 | Mervin Castagnaro | 10 | Son | — | California |
| 70 | Winifred Castagnaro | 8 | Daughter | — | California |
| 71 | Muriel Castagnaro | 5 | Daughter | — | California |
| 72 | Margaret O'Riley | 55 | Head | Housework | California |
Pedigree Summary
Florence + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)