Mary Thomas — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Morrison-County, Minnesota

Our Model Tree links this Mary Thomas across the 1920, 1930 and 1940 US Censuses in Morrison-County, Minnesota (XGBoost, ~Confirmed), with identified parents Catherine & Katherine — first a daughter (b.~1886), then head of a 2-person household.

Age 54 b. ~1886 Female Daughter Born: Minnesota Single

1940 Census Record Details

Census Year	1940
Location	Morrison-County, Minnesota
Surname	Thomas
Given Name	Mary
Relationship to Head	daughter
Sex	F
Color / Race	White
Age	54
Marital Status	Single
Birthplace	Minnesota
1935 Residence (City)	Village of Pierz
1935 Residence (County)	Morrison
Additional Details
Class of Worker	0
Hours Worked	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota
Township / Ward	Village Of Pierz
Est. Birth Year	~1886

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Mary Thomas	Daughter	—	54	~1886
Katherine Thomas	Head	—	81	~1859

Census Appearances

1920

Morrison, Minnesota

Daughter, age 34

Morrison, Minnesota · implied b. ~1886 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thomas
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	34
Marital Status	Single
Birthplace	Minnesota
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	German
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1930

Morrison, Minnesota

Daughter, age 44

Morrison, Minnesota · implied b. ~1886 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thommes
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	44
Marital Status	Single
Birthplace	Minnesota
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read/Write	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1940

Morrison-County, Minnesota

Daughter, age 54

Morrison-County, Minnesota · implied b. ~1886 — 2 household members

Surname	Thomas
Given Name	Mary
Relationship to Head	daughter
Sex	F
Color / Race	White
Age	54
Marital Status	Single
Birthplace	Minnesota
1935 Residence (City)	Village of Pierz
1935 Residence (County)	Morrison
Class of Worker	0
Hours Worked	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

Model Tree

Model Tree available

Our Model Tree links Mary Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Catherine Thomas (~0.92 confidence) and mother Katherine Thomas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Catherine Thomas

b. ~1859

Source mother

● Household · direct · ~0.92

Mother

Katherine Thomas

b. ~1859

Source mother

● Household · direct · ~0.92

This person

Anchor record

Mary Thomas

Daughter · 1940 · age 54 · b. ~1886 · Minnesota

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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 — Morrison-County, Minnesota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01939-00586)

Line	Name	Age	Relation	Occupation	Birthplace
41	Julia Wellenberg	12	daughter	—	Minnesota
42	Gordon Wellenberg	11	son	—	Minnesota
43	Myrtle Wellenberg	8	daughter	—	Minnesota
44	Theodore Wellenberg	7	son	—	Minnesota
45	August Ophoven	65	Head	—	Holland
46	Margaret Ophoven	59	Wife	—	Minnesota
47	Arthur Ophoven	30	son	—	Minnesota
48	Marcella Ophoven	23	daughter	—	Minnesota
49	Theodore Pohlkamp	76	Head	—	Germany
50	Josephine Pohlkamp	78	Wife	—	Germany
51	Wilfred Faust	47	Head	—	Minnesota
52	Theresia Faust	44	Wife	—	Minnesota
53	Naomah Faust	19	daughter	Grocery Clerk	Minnesota
54	David W. Faust	16	son	—	Minnesota
55	Kathleen Faust	8	daughter	—	Minnesota
56	Frances Faust	4	daughter	—	Minnesota
57	Herbert Stangl	42	Head	Teacher	Minnesota
58	Johanna Stangl	39	Wife	—	Minnesota
59	Reinhart Stangl	16	son	—	Minnesota
60	Florence Stangl	13	daughter	—	Minnesota
61	Laverne Stangl	9	daughter	—	Minnesota
62	Viola Stangl	6	daughter	—	Minnesota
63	Leander Stangl	2	son	—	Minnesota
64	Gerald Stangl	0	son	—	Minnesota
65	Leander Hartmann	29	Head	Grocery Salesman	Minnesota
66	Florentine Hartmann	26	Wife	—	Minnesota
67	Roland Hartmann	1	son	—	Minnesota
68	Katherine Thomas	81	Head	—	Germany
69	Mary Thomas THIS PERSON	54	daughter	—	Minnesota
70	Anna Brahms	70	Head	—	Germany
71	Rose Tonder	79	Head	—	Wisconsin
72	John J. Tonder	42	son	Painter	Minnesota
73	Anton Zimmerman	67	Head	Post Clerk	Germany
74	Anna Zimmerman	63	Wife	—	Minnesota
75	Lewis Zimmerman	18	daughter	—	Minnesota
76	Arthur R. Scheuble	46	Head	Rural Carrier	Minnesota
77	Catherine Scheuble	41	Wife	—	Minnesota
78	Loraine Scheuble	17	daughter	—	Minnesota
79	Anita Scheuble	11	daughter	—	Minnesota
80	Andrew Lucking	63	Head	—	Minnesota

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Pedigree Summary

Mary

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

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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