Mary Becker — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Mary Becker across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 4-person household.

Age 71 b. ~1869 Female Head Born: Germany Widowed

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Becker
Given Name	Mary
Relationship to Head	head
Sex	F
Color / Race	White
Age	71
Marital Status	Widowed
Birthplace	Germany
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Naturalization Status	Naturalized
Additional Details
Occupation	H
Class of Worker	0
Highest Grade	No 8
1935 Residence	same house
Birth Country	Germany
Birthplace (normalized)	germany
Occupation	H
Township / Ward	Chicago
Est. Birth Year	~1869

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 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Mae Longlotz	Daughter	—	45	~1895
Mary Becker	Head	—	71	~1869
Earl Longlotz	Other	—	37	~1903
William Prussing	Other	—	24	~1916

Census Appearances

1920

Cook, Illinois

Spouse, age 51

Cook, Illinois · implied b. ~1869 — 13 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Becker
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	51
Marital Status	Married
Birthplace	Germany
Year of Immigration	1886
Naturalization Status	Naturalized
Father's Birthplace	Poland
Mother's Birthplace	Poland
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	German
Birth Country	Germany
Birthplace (normalized)	germany

1930

Cook, Illinois

Spouse, age 61

Cook, Illinois · implied b. ~1869 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Backer
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	61
Marital Status	Married
Birthplace	Germany
Naturalization Status	Naturalized
Year of Immigration	1887
Age at First Marriage	18
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read/Write	Yes
Mother Tongue	German
Birth Country	Germany
Birthplace (normalized)	germany

1940

Cook-County, Illinois

Head, age 71

Cook-County, Illinois · implied b. ~1869 — 4 household members

Surname	Becker
Given Name	Mary
Relationship to Head	head
Sex	F
Color / Race	White
Age	71
Marital Status	Widowed
Birthplace	Germany
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Naturalization Status	Naturalized
Occupation	H
Class of Worker	0
Highest Grade	No 8
1935 Residence	same house
Birth Country	Germany
Birthplace (normalized)	germany

Model Tree

Linked across censuses

Our Model Tree links Mary Becker 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 Becker

Head · 1940 · age 71 · b. ~1869 · Illinois

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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 — Cook-County, Illinois Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00957-00610)

Line	Name	Age	Relation	Occupation	Birthplace
41	Alice D Drew	53	wife	H	Illinois
42	Barbara Drew	11	daughter	S	Illinois
43	Mary Becker THIS PERSON	71	head	H	Germany
44	Mae Longlotz	45	daughter	H	Illinois
45	Earl Longlotz	37	son-in-law	Ins Agent	Illinois
46	William Prussing	24	grandson	Maintenance	Illinois
47	Ernest J. Mccormick	43	head	Salesman	Illinois
48	Agathel Mccormick	31	wife	H	Illinois
49	James Dale Mccormick	1	son	—	Illinois
50	George Burkema	46	head	Steam Heating	Illinois
51	Benjamin Burkema	43	brother	Roofer	Illinois
52	Joseph Burkema	40	brother	Roofer	Illinois
53	William Freney	57	head	Barber	Germany
54	Margaret Freney	51	wife	H	Germany
55	Raymond Grabner	54	head	Engine Inspector	Ohio
56	Flossie Kettler	51	sister	H	Ohio
57	Svend Andersen	55	head	Laborer	Denmark
58	Christina Andersen	52	wife	H	Denmark
59	Martin Vondaal	41	head	Laborer	Illinois
60	Evelyn Vondaal	18	daughter	Clerical	Illinois
61	Janet Vondaal	17	daughter	H	Illinois
62	Betty Jane Vondaal	14	daughter	—	Illinois
63	Doris Marie Vondaal	11	daughter	S	Illinois
64	Martin Jr Vondaal	7	son	S	Illinois
65	Harold J. Vondaal	6	son	S	Illinois
66	June B Vondaal	3	daughter	—	Illinois
67	Albert Jaeger	55	head	Laborer	Netherlands
68	Jennie Jaeger	55	wife	H	Netherlands
69	Raymond Jaeger	19	son	Ice Man	Illinois
70	Maynet Jaeger	18	son	Ice Helper	Illinois
71	Fred Robertson	46	head	Maintenance	Scotland
72	Catherine Robertson	44	wife	H	Illinois
73	Fred Jr Robertson	12	son	S	Illinois
74	William Robertson	9	son	S	Illinois
75	David Donegan	41	brother-in-law	Printer	Illinois
76	Mary Donegan	44	sister-in-law	H	Scotland
77	Charles Donegan	15	nephew	S	Illinois
78	Claus Trede	75	head	U	Germany
79	Bertha Trede	67	wife	H	Germany
80	Anna Eckert	42	daughter	Housework	Illinois

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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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