John Shields — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Wapello-County, Iowa

Our Model Tree links this John Shields across the 1920, 1930 and 1940 US Censuses in Wapello-County, Iowa (XGBoost, ~Confirmed), with identified parents Leonard & Millie — first a head (b.~1904), then head of a 3-person household.

Age 36 b. ~1904 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Wapello-County, Iowa
Surname	Shields
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Ottumwa
1935 Residence (County)	Wapello County
Additional Details
Occupation	Mechanic
Industry	Garage
Class of Worker	PW
Hours Worked	60
Income (1939)	1040
Highest Grade	8
1935 Residence	Same Place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Mechanic
Township / Ward	Ottumwa
Est. Birth Year	~1904

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 John	Age	Birth yr
Vanda Shields	Daughter	—	15	~1925
John Shields	Head	—	36	~1904
Winnie Shields	Spouse	—	35	~1905

Census Appearances

1920

Wapello, Iowa

Son, age 16

Wapello, Iowa · implied b. ~1904 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Shields
Given Name	John D
Relationship to Head	Son
Sex	M
Color / Race	White
Age	16
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Occupation	Farm labor
Industry	Home farm
Can Read	No
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Wapello, Iowa

Head, age 26

Wapello, Iowa · implied b. ~1904 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Shields
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	26
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	20
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Occupation	Mechanic
Industry	Garage
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	22
Radio Set	R
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Wapello-County, Iowa

Head, age 36

Wapello-County, Iowa · implied b. ~1904 — 3 household members

Surname	Shields
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Ottumwa
1935 Residence (County)	Wapello County
Occupation	Mechanic
Industry	Garage
Class of Worker	PW
Hours Worked	60
Income (1939)	1040
Highest Grade	8
1935 Residence	Same Place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Leonard Shields

b. ~1880

Source father

● Household · direct · ~0.92

Mother

Millie Shields

b. ~1880

Source mother

● Household · direct · ~0.92

This person

Anchor record

John Shields

Head · 1940 · age 36 · b. ~1904 · 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 — Wapello-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01209-00820)

Line	Name	Age	Relation	Occupation	Birthplace
41	John Luke	20	Head	Clerk	Iowa
42	Helen Luke	19	Wife	—	Iowa
43	Richard Luke	1	Son	—	Iowa
44	Gary Luke	0	Son	—	Iowa
45	Robert Mccall	24	Head	Laborer	Iowa
46	Edith D. Mccall	22	Wife	—	Iowa
47	Bobby Mccall	4	Son	—	Iowa
48	Jolene Ann Mccall	3	Daughter	—	Iowa
49	Shirley Mccall	1	Daughter	—	Iowa
50	Warren Moffit	25	Head	Laborer	Iowa
51	Geraldine D. Moffit	23	Wife	—	Iowa
52	Willis Leonard	37	Head	Laborer	Iowa
53	Elsie D. Leonard	33	Wife	—	Iowa
54	Moses Leonard	12	Son	—	Iowa
55	Christina Leonard	10	Daughter	—	Iowa
56	Winifred Leonard	6	Son	—	Iowa
57	George Cloyd	79	Head	—	Iowa
58	Albert Schakel	37	Head	Mechanic	Iowa
59	Mable D. Schakel	31	Wife	—	Illinois
60	Robert Schakel	11	Son	—	Iowa
61	Ronald Schakel	3	Son	—	Iowa
62	George Lister	48	Head	Engineer	Iowa
63	Myrtle D. Lister	40	Wife	—	Iowa
64	Louise Lister	19	Daughter	—	Iowa
65	Gary Lister	2	Son	—	Iowa
66	John Shields THIS PERSON	36	Head	Mechanic	Iowa
67	Winnie D. Shields	35	Wife	—	Iowa
68	Vanda Shields	15	Daughter	—	Iowa
69	Wayne Rowe	26	Head	A.D.T. Operator	Iowa
70	Melba D. Rowe	26	Wife	—	Iowa
71	Lawrence Long	46	Head	Salesman	Iowa
72	Eva D. Long	43	Wife	—	Iowa
73	Madeline Long	20	Daughter	Steno	Iowa
74	Larry Long	15	Son	—	Iowa
75	Ernest Leonard	33	Head	Salesman	Iowa
76	Lucille D. Leonard	30	Wife	—	Iowa
77	Robert Leonard	12	Son	—	Iowa
78	Phyllis Leonard	7	Daughter	—	Iowa
79	Mary Lou Leonard	3	Daughter	—	Iowa
80	Ernest Barnhill	37	Head	Salesman	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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