John Frank — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Warren-County, Iowa

Our Model Tree links this John Frank across the 1920, 1930 and 1940 US Censuses in Warren-County, Iowa (XGBoost, ~Confirmed), with identified parents W & Merle — first a head (b.~1899), then head of a 7-person household.

Age 41 b. ~1899 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Warren-County, Iowa
Surname	Frank
Given Name	John W.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Liberty Township
1935 Residence (County)	Warren
Additional Details
Occupation	Farmer
Industry	Farm
Class of Worker	OA
Hours Worked	60
Income (1939)	410
Highest Grade	Hs 3
1935 Residence	Same house
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Farmer
Township / Ward	Liberty Township
Est. Birth Year	~1899

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.

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

Name	Relation to head	Relative to John	Age	Birth yr
Maryann Frank	Daughter	—	10	~1930
John Frank	Head	—	41	~1899
Nellie Frank	Other	—	72	~1868
James Frank	Son	—	5	~1935
Herbert Frank	Son	—	16	~1924
Richard Frank	Son	—	14	~1926
Anna Frank	Spouse	—	40	~1900

Census Appearances

1920

Warren, Iowa

Son, age 21

Warren, Iowa · implied b. ~1899 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Frank
Given Name	John W
Relationship to Head	Son
Sex	M
Color / Race	White
Age	21
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Illinois
Mother's Birthplace	Iowa
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Warren, Iowa

Head, age 31

Warren, Iowa · implied b. ~1899 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Frank
Given Name	John W
Relationship to Head	Head
Sex	M
Color / Race	White
Age	31
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	24
Father's Birthplace	Illinois
Mother's Birthplace	Iowa
Occupation	Partner
Industry	General Farm
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	R
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Warren-County, Iowa

Head, age 41

Warren-County, Iowa · implied b. ~1899 — 7 household members

Surname	Frank
Given Name	John W.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Liberty Township
1935 Residence (County)	Warren
Occupation	Farmer
Industry	Farm
Class of Worker	OA
Hours Worked	60
Income (1939)	410
Highest Grade	Hs 3
1935 Residence	Same house
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

W Frank

b. ~1864

Source father

● Household · direct · ~0.92

Mother

Merle Frank

b. ~1869

Source mother

● Household · direct · ~0.92

This person

Anchor record

John Frank

Head · 1940 · age 41 · b. ~1899 · Iowa

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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 — Warren-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01210-00198)

Line	Name	Age	Relation	Occupation	Birthplace
1	Minnie Alexander	36	Wife	—	Illinois
2	Thomas Alexander	32	Son	Laborer	Iowa
3	Robert Alexander	31	Son	Laborer	Iowa
4	Harry Alexander	19	Son	Laborer	Iowa
5	Horace Alexander	16	Son	—	Iowa
6	Arlo Alexander	11	Son	—	Iowa
7	Floyd Wallace	33	Head	Laborer	Iowa
8	Mildred Wallace	32	Wife	—	Iowa
9	Herbert Wallace	11	Son	—	Iowa
10	Helen Wallace	9	Daughter	—	Iowa
11	Hazel Wallace	7	Daughter	—	Iowa
12	Henry Wallace	4	Son	—	Iowa
13	Harriet Wallace	2	Daughter	—	Iowa
14	Frank M. Sandy	41	Head	Farmer	Iowa
15	Annabelle E. Sandy	35	Wife	—	Missouri
16	Carl E. Sandy	10	Son	—	Iowa
17	Howard Ferguson	30	Head	Farmer	Iowa
18	Hazel I. Ferguson	29	Wife	—	Iowa
19	Catherine Ferguson	4	Daughter	—	Iowa
20	Kenneth M. Ferguson	2	Son	—	Iowa
21	John W. Frank THIS PERSON	41	Head	Farmer	Iowa
22	Anna M. Frank	40	Wife	—	Iowa
23	Herbert W. Frank	16	Son	—	Iowa
24	Richard A. Frank	14	Son	—	Iowa
25	Maryann Frank	10	Daughter	—	Iowa
26	Nellie Frank	72	Mother	—	Iowa
27	James E. Frank	5	Son	—	Iowa
28	Clarence M. Lepley	28	Head	Farmer	Iowa
29	Esther L. Lepley	31	Wife	—	Iowa
30	Richard E. Lepley	6	Son	—	Iowa
31	Robert L. Lepley	4	Son	—	Iowa
32	Marilyn L. Lepley	2	Daughter	—	Iowa
33	Charles A. Colgington	64	Head	Blacksmith	Iowa
34	Albie E. Colgington	58	Wife	—	Iowa
35	Betty Colgington	14	Daughter	—	Iowa
36	Wilma Colgington	12	Daughter	—	Iowa
37	Junior Colgington	17	Son	Laborer	Iowa
38	Leland L. Line	27	Head	Farmer	Iowa
39	Dorothy L. Line	25	Wife	Farmer	Iowa
40	Bert Storms	35	Head	Farmer	Iowa

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Pedigree Summary

John

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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