Billy Williams — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · San Diego, California

Our Model Tree links this Billy Williams across the 1930 and 1940 US Censuses in San Diego, California (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 4-person household.

Age 3 b. ~1927 Male Son Born: California Single

1930 Census Record Details

Census Year	1930
Location	San Diego, California
Surname	Williams
Given Name	Billy J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	3
Marital Status	Single
Birthplace	California
Father's Birthplace	New York
Mother's Birthplace	Nebraska
Additional Details
Occupation	none
Birth State	California
Birth Country	United States
Birthplace (normalized)	california
Township / Ward	San Diego City
Est. Birth Year	~1927

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 Billy	Age	Birth yr
Billy Williams	Son	—	3	~1927
Geraldine Williams	Daughter	—	4	~1926
Etta Williams	Other	—	32	~1898
Gerald Williams	Head	—	34	~1896

Census Appearances

1930

San Diego, …

Son, age 3

San Diego, California · implied b. ~1927 — 4 household members

Surname	Williams
Given Name	Billy J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	3
Marital Status	Single
Birthplace	California
Father's Birthplace	New York
Mother's Birthplace	Nebraska
Occupation	none
Birth State	California
Birth Country	United States
Birthplace (normalized)	california

1940

San-Diego-County, California

Son, age 14

San-Diego-County, California · implied b. ~1926 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Williams
Given Name	Bill
Relationship to Head	son
Sex	M
Color / Race	White
Age	14
Marital Status	Single
Birthplace	California
1935 Residence (City)	San Diego City
1935 Residence (County)	San Diego
Highest Grade	8
1935 Residence	Same place
Birth State	California
Birth Country	United States
Birthplace (normalized)	california

Model Tree

Linked across censuses

Our Model Tree links Billy Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Billy Williams

Son · 1930 · age 3 · b. ~1927 · California

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Sibling

Geraldine Williams

Sibling · 1930 · age 4

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 — San Diego, California Open full size

Page Contents

50 people indexed on this census page (ia:1930:californiacensus00reel190:1141)

Line	Name	Age	Relation	Occupation	Birthplace
1	Jack Lundblade	11	Son	None	California
2	Earl Lundblade	6	Son	None	California
3	Charles Lindenmeyer	55	Head	Salesman	Connecticut
4	Ella Lindenmeyer	52	Wife-H	None	Indiana
5	Marguerite Lindenmeyer	18	Daughter	Artist	Kansas
6	Robert Mansur	48	Drug Store	Manager	Missouri
7	Elizabeth Mansur	43	Wife-H	None	Missouri
8	Gilbert De Armond	56	Head	None	Ohio
9	Edith De Armond	50	Wife-H	None	Ohio
10	Jane De Armond	19	Daughter	None	California
11	Alfred Frank	57	Head	Proprietor	Missouri
12	Margaret G. Frank	42	Wife-H	None	Pennsylvania
13	Fred D. Frank	8	Son	None	Pennsylvania
14	Betty J. Frank	6	Daughter	None	Pennsylvania
15	Frederick Hamilton	44	Head	Broker	Canada-English
16	Edna Hamilton	44	Wife-H	None	Denmark
17	Mary Hamilton	11	Daughter	None	Washington
18	William Hamilton	10	Son	None	California
19	Edward F. Moore	57	Head	Master Mechanic	England
20	Marie A. Moore	52	Wife-H	None	England
21	Mary A. Hunt	71	Head	None	Northern Ireland
22	George Hamilton	30	Head	Lieutenant	Florida
23	Gertrude Hamilton	22	Wife-H	None	California
24	Shirley Hamilton	1	Daughter	None	California
25	Fumye Abel	21	Servant	Servant	Samoa
26	Lucien Kennedy	30	Head	None	Illinois
27	Ruby Frances Kennedy	38	Sister	None	Illinois
28	Anna Giordio	31	Nurse	Trained Nurse	Pennsylvania
29	William Fleming	63	Head	Machinist	Massachusetts
30	Annie Fleming	54	Wife-H	None	Maine
31	Lester Fleming	31	Son	Salesman	Massachusetts
32	Grace Fleming	26	Daughter	Stenographer	Massachusetts
33	William Fleming	15	Son	None	New York
34	Leon Champagne	32	Head	Teacher	Oregon
35	Lorraine Champagne	27	Wife-H	None	Tennessee
36	Irene Champagne	10	Daughter	None	Oregon
37	Jean Champagne	8	Daughter	None	Oregon
38	Walter Block	35	Head	Salesman	Illinois
39	Catherine Block	35	Wife-H	Manager	Illinois
40	Constance Block	7	Daughter	None	Illinois
41	Byrd Gregg	43	Head	Stenographer	North Dakota
42	Lulu Gregg	40	Sister	None	California
43	Patricia Gregg	7	Daughter	None	California
44	Willard Bischoff	37	Head	Salesman	Michigan
45	Grandmother Bischoff	80	Mother	None	New Hampshire
46	Gerald Williams	34	Head	Painter	New York
47	Etta Williams	32	Wife-H	None	Nebraska
48	Geraldine Williams	4	Daughter	None	California
49	Billy J. Williams THIS PERSON	3	Son	None	California
50	Della G. Human	54	Head	None	Canada-English

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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)

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