Margaret Hamilton — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · San-Francisco-County, California

Our Model Tree links this Margaret Hamilton across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 3-person household.

Age 44 b. ~1896 Female Spouse Born: Scotland Married

1940 Census Record Details

Census Year	1940
Location	San-Francisco-County, California
Surname	Hamilton
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Scotland
1935 Residence (City)	San Francisco
1935 Residence (County)	San Francisco
Naturalization Status	Naturalized
Additional Details
Hours Worked	0
Highest Grade	Hs 4
1935 Residence	Same place
Birth Country	Scotland
Birthplace (normalized)	scotland
Township / Ward	San Francisco
Est. Birth Year	~1896

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.

3 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Margaret	Age	Birth yr
Margaret Hamilton	Spouse	—	44	~1896
John Hamilton	Head	—	43	~1897
Gordon Hamilton	Son	—	6	~1934

Census Appearances

1920

San Francisco, …

Spouse, age 22

San Francisco, California · implied b. ~1898 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hamilton
Given Name	Mrs.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	22
Marital Status	Married
Birthplace	Scotland
Father's Birthplace	Scotland
Mother's Birthplace	Scotland
Occupation	Housewife
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Scotland
Birthplace (normalized)	scotland

1930

San Francisco, …

Spouse, age 34

San Francisco, California · implied b. ~1896 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hamilton
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	34
Marital Status	Married
Birthplace	Scotland
Naturalization Status	First papers filed
Year of Immigration	1920
Age at First Marriage	24
Father's Birthplace	Scotland
Mother's Birthplace	Scotland
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Scotland
Birthplace (normalized)	scotland

1940

San-Francisco-County, California

Spouse, age 44

San-Francisco-County, California · implied b. ~1896 — 3 household members

Surname	Hamilton
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Scotland
1935 Residence (City)	San Francisco
1935 Residence (County)	San Francisco
Naturalization Status	Naturalized
Hours Worked	0
Highest Grade	Hs 4
1935 Residence	Same place
Birth Country	Scotland
Birthplace (normalized)	scotland

Model Tree

Linked across censuses

Our Model Tree links Margaret Hamilton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Margaret Hamilton

Spouse · 1940 · age 44 · b. ~1896 · California

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — San-Francisco-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00313-00696)

Line	Name	Age	Relation	Occupation	Birthplace
41	Agatha Rudolph	68	Wife	—	Sweden
42	John G. Hamilton	43	Head	Investigator	Scotland
43	Margaret Hamilton THIS PERSON	44	Wife	—	Scotland
44	Gordon Hamilton	6	Son	—	California
45	James Winchester	58	Head	Secretary	Canada Eng.
46	Hilda Winchester	53	Wife	—	England
47	Alexander Winchester	17	Son	—	California
48	Ruth Winchester	15	Daughter	—	California
49	Sidney Winchester	14	Son	—	California
50	Elmer Larimer	63	Head	—	California
51	Katherine Larimer	65	Wife	Secretary	Holland
52	Henry Noldenbulken	49	Head	Truck Driver	California
53	Lillian Noldenbulken	42	Wife	—	California
54	Patricia Noldenbulken	20	Daughter	Stenographer	California
55	Jane Noldenbulken	18	Daughter	Stenographer	California
56	Ray Noldenbulken	11	Son	—	California
57	Shirley Noldenbulken	10	Daughter	—	California
58	Henry Noldenbulken	7	Son	—	California
59	Horace Abayle	52	Head	Ins. Salesman	California
60	Florence Abayle	46	Wife	—	California
61	Beverly Abayle	21	Daughter	Stenographer	Nevada
62	Thelma Abayle	11	Daughter	—	Utah
63	Charles Nemetz	69	Head	Supt Of Const	England
64	Francis Nemetz	45	Wife	—	California
65	Gonzalo Legorreta	46	Head	Machine Oper	Mexico
66	Conception Legorreta	40	Wife	—	Mexico
67	Gonzalo Legorreta	21	Son	—	California
68	Bertha Legorreta	18	Daughter	—	California
69	Hector Legorreta	16	Son	—	California
70	Alicia Legorreta	14	Daughter	—	California
71	Conchita Legorreta	10	Daughter	—	California
72	Christine Legorreta	9	Daughter	—	California
73	Raphael Legorreta	2	Son	—	California
74	Facunda Legorreta	65	Mother	—	Mexico
75	Maude Anderson	54	Head	—	California
76	Velma Anderson	29	Daughter	—	California
77	Leo J. Brunner	28	Head	Cosmetician	California
78	Florence Brunner	26	Wife	—	Nevada
79	Arthur Kyburz	54	Head	Electrical Contractor	Oregon
80	Kyburz	51	Wife	—	California

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 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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