Mary Keller — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Pratt-County, Kansas

Our Model Tree links this Mary Keller across the 1920, 1930 and 1940 US Censuses in Pratt-County, Kansas (XGBoost, ~Confirmed), with identified parents Mayme & Oscar — first a daughter (b.~1920), then head of a 4-person household.

Age 20 b. ~1920 Female Daughter Born: Kansas Single

1940 Census Record Details

Census Year	1940
Location	Pratt-County, Kansas
Surname	Keller
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	20
Marital Status	Single
Birthplace	Kansas
1935 Residence (City)	Pratt City
1935 Residence (County)	Pratt
Additional Details
Class of Worker	S
Hours Worked	5
Income (1939)	0
Highest Grade	C 1
1935 Residence	Same House
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas
Township / Ward	Pratt City
Est. Birth Year	~1920

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
Mary Keller	Daughter	—	20	~1920
Oscar Keller	Head	—	53	~1887
Lawrence Keller	Son	—	22	~1918
Mayme Keller	Spouse	—	54	~1886

Census Appearances

1920

Pratt, Kansas

Daughter, age

Pratt, Kansas · implied b. ~1920 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Keller
Given Name	Mary J
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	0
Marital Status	Single
Birthplace	Kansas
Father's Birthplace	Illinois
Mother's Birthplace	Illinois
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

1930

Pratt, Kansas

Daughter, age 10

Pratt, Kansas · implied b. ~1920 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Keller
Given Name	Mary J.
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	10
Marital Status	Single
Birthplace	Kansas
Father's Birthplace	Illinois
Mother's Birthplace	Illinois
Can Read/Write	Yes
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

1940

Pratt-County, Kansas

Daughter, age 20

Pratt-County, Kansas · implied b. ~1920 — 4 household members

Surname	Keller
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	20
Marital Status	Single
Birthplace	Kansas
1935 Residence (City)	Pratt City
1935 Residence (County)	Pratt
Class of Worker	S
Hours Worked	5
Income (1939)	0
Highest Grade	C 1
1935 Residence	Same House
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Mayme Keller

b. ~1885

Source mother

● Household · direct · ~0.92

Father

Oscar Keller

b. ~1887

Source father

● Household · direct · ~0.92

This person

Anchor record

Mary Keller

Daughter · 1940 · age 20 · b. ~1920 · Kansas

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Sibling

Lawrence Keller

Sibling · 1940 · age 22

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

1940 US Federal Census — Pratt-County, Kansas Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01252-00766)

Line	Name	Age	Relation	Occupation	Birthplace
1	Herbert Newton	21	Head	Proprietor	Kansas
2	Clara Newton	20	Wife	—	Kansas
3	Janice Newton	0	Daughter	—	Kansas
4	Elvis Atchinson	27	Head	Attendant	Oklahoma
5	Florence Atchinson	22	Wife	—	Kansas
6	Gale Atchinson	1	Son	—	Kansas
7	Joe Rhodes	75	Head	—	New York
8	Inez Rhodes	65	Wife	—	Illinois
9	John Roney	65	Lodger	—	Missouri
10	Oscar Keller	53	Head	Proprietor	Illinois
11	Mayme Keller	54	Wife	—	Illinois
12	Lawrence Keller	22	Son	—	Kansas
13	Mary Keller THIS PERSON	20	Daughter	—	Kansas
14	William Epley	54	Head	—	Kansas
15	Bertha Epley	39	Wife	Bookmender	Kansas
16	Marilyn Epley	3	Daughter	—	Kansas
17	Nate Gordon	79	Head	—	Missouri
18	Flora Gordon	65	Wife	—	Kansas
19	Earl Kitch	34	Head	Farmer	Kansas
20	Thelma Kitch	30	Wife	—	Kansas
21	Leo Kitch	11	Son	—	Kansas
22	Helen Barbour	13	Boy	—	Kansas
23	Phillip Mckenzie	75	Head	—	Missouri
24	Mattie Mckenzie	65	Wife	—	Kentucky
25	Lawrence Mckenzie	29	Son	Dishwasher	Kansas
26	Juanita Mckenzie	23	Daughter	—	Kansas
27	Frankie Mckenzie	9	Granddaughter	—	Kansas
28	Billy Mckenzie	7	Granddaughter	—	Kansas
29	Edward Brown	44	Head	—	Kansas
30	Sarah Foxy	45	Head	Housework	Missouri
31	Bessie Porter	63	Head	Maid	Kentucky
32	Archie Bristow	43	Lodger	Janitor	Missouri
33	Grady Bristow	46	Head	House Man	Missouri
34	Inez Bristow	34	Wife	—	Missouri
35	Marjorie Bristow	17	Daughter	—	Kansas
36	Bruce Langdon	35	Head	—	Kansas
37	Catta Bell Langdon	32	Wife	—	Missouri
38	Sherwin Langdon	10	Son	—	Kansas
39	Betty Langdon	7	Daughter	—	Kansas
40	Wallace Langdon	5	Son	—	Kansas

Search for Mary Keller

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Pedigree Summary

Mary + 1 sibling

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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