Mary Armstrong — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Los-Angeles-County, California

Our Model Tree links this Mary Armstrong across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 3-person household.

Age 53 b. ~1887 Female Spouse Born: England Married

1940 Census Record Details

Census Year	1940
Location	Los-Angeles-County, California
Surname	Armstrong
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	England
1935 Residence (City)	Los Angeles City
1935 Residence (County)	Los Angeles
Naturalization Status	First papers filed
Additional Details
Occupation	Sewing
Industry	Drapery shop
Class of Worker	PW
Hours Worked	40
Income (1939)	156
Highest Grade	No 8
1935 Residence	Same Place
Birth Country	England
Birthplace (normalized)	england
Occupation	Sewing
Township / Ward	Los Angeles City
Est. Birth Year	~1887

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 Mary	Age	Birth yr
Gronne Armstrong	Daughter	—	25	~1915
Chas Armstrong	Head	—	51	~1889
Mary Armstrong	Spouse	—	53	~1887

Census Appearances

1920

Los Angeles, …

Spouse, age 36

Los Angeles, California · implied b. ~1884 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Armstrong
Given Name	May
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	36
Marital Status	Married
Birthplace	England
Father's Birthplace	England
Mother's Birthplace	England
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	England
Birthplace (normalized)	england

1930

Los Angeles, …

Spouse, age 42

Los Angeles, California · implied b. ~1888 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Armstrong
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	England
Naturalization Status	Alien
Year of Immigration	1921
Age at First Marriage	22
Father's Birthplace	England
Mother's Birthplace	England
Occupation	Seamstress
Industry	Wholesale Dry Goods
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	English
Birth Country	England
Birthplace (normalized)	england

1940

Los-Angeles-County, California

Spouse, age 53

Los-Angeles-County, California · implied b. ~1887 — 3 household members

Surname	Armstrong
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	England
1935 Residence (City)	Los Angeles City
1935 Residence (County)	Los Angeles
Naturalization Status	First papers filed
Occupation	Sewing
Industry	Drapery shop
Class of Worker	PW
Hours Worked	40
Income (1939)	156
Highest Grade	No 8
1935 Residence	Same Place
Birth Country	England
Birthplace (normalized)	england

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Armstrong

Spouse · 1940 · age 53 · b. ~1887 · 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 — Los-Angeles-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00424-00207)

Line	Name	Age	Relation	Occupation	Birthplace
1	Chas H. Newell	51	Head	Inspector	New York
2	Josephine Newell	40	Wife	Saleslady	Georgia
3	Sophia Bente	61	Head	Dress Maker	Missouri
4	Guy Davis	45	Head	Accountant	Kansas
5	Ella Clifford	59	Head	—	New York
6	Harold Clifford	58	Husband	Laborer	England
7	Jimmy Clifford	6	Grandson	—	California
8	Virginia Johnson	17	Daughter	Will Call Clerk	California
9	Patricia Johnson	15	Granddaughter	—	California
10	George Morrell	30	Head	Buyer	Montana
11	June Morrell	27	Wife	Buyer	California
12	Fannie Boggess	76	Lodger	—	Kentucky
13	Emery Thacker	56	Head	Assistant Superintendent	Missouri
14	Maude Thacker	54	Wife	—	California
15	Roy Farmer	48	Head	Proprietor	California
16	Bess Farmer	47	Wife	—	California
17	Roy Jr. Farmer	23	Son	Plant Manager	California
18	Catherine Farmer	22	Daughter	Secretary	California
19	Chas. Armstrong	51	Head	Watch Man	England
20	Mary Armstrong THIS PERSON	53	Wife	Sewing	England
21	Gronne Armstrong	25	Daughter	Retired	Canada
22	Mable Greene	61	Head	Hostess	Iowa
23	W. R. Thomas	63	Head	—	Ohio
24	Helen Thomas	60	Wife	Proof Reader	Missouri
25	B. C. Fowler	45	Head	Salesman	Pennsylvania
26	Louella Fowler	34	Wife	Cashier	Colorado
27	W. J. Hall	59	Lodger	—	England
28	Helen A. Hall	54	Lodger	—	England
29	Melvin L. Jontz	39	Head	Office Work	Ohio
30	Christine Jontz	35	Wife	—	Scotland
31	Jack Sailor	14	Ward	—	California
32	Margaret Mckay	64	Mother in law	—	Scotland
33	Walter Henwood	39	Head	Electric Estimator	Kansas
34	Clarisse Henwood	31	Wife	Teacher	California
35	John Gooch	29	Lodger	Office Work	Illinois
36	Roberta Gooch	26	Lodger	Trained Nurse	California
37	Leota Kitt	56	Head	Manager	Texas
38	Mildred Kitt	35	Daughter	Bookkeeper	Arizona
39	A. H. Bailey	31	Head	Clerk	Illinois
40	Eleanor Bailey	27	Wife	Clerk	Indiana

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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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