James Hamilton — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Keokuk-County, Iowa

Our Model Tree links this James Hamilton across the 1920, 1930 and 1940 US Censuses in Keokuk-County, Iowa (XGBoost, ~Confirmed), with identified parents Dan & Gertrude — first a head (b.~1912), then head of a 3-person household.

Age 28 b. ~1912 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Keokuk-County, Iowa
Surname	Hamilton
Given Name	James
Relationship to Head	Head
Sex	M
Color / Race	White
Age	28
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Washington Township
1935 Residence (County)	Keokuk County
Additional Details
Occupation	Laborer
Industry	Agriculture
Class of Worker	PW
Hours Worked	52
Income (1939)	450
Highest Grade	8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Laborer
Township / Ward	Washington Township
Est. Birth Year	~1912

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 James	Age	Birth yr
Melva Hamilton	Daughter	—		~1940
James Hamilton	Head	—	28	~1912
Eva Hamilton	Spouse	—	18	~1922

Census Appearances

1920

Keokuk, Iowa

Son, age 8

Keokuk, Iowa · implied b. ~1912 — 10 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hamilton
Given Name	James R.
Relationship to Head	son
Sex	M
Color / Race	White
Age	8
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Occupation	none
Can Read	Yes
Can Write	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Keokuk, Iowa

Son, age 18

Keokuk, Iowa · implied b. ~1912 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hamilton
Given Name	James
Relationship to Head	Son
Sex	M
Color / Race	White
Age	18
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Occupation	Farmer
Industry	Gen Farming
Class of Worker	W
Can Read/Write	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Keokuk-County, Iowa

Head, age 28

Keokuk-County, Iowa · implied b. ~1912 — 3 household members

Surname	Hamilton
Given Name	James
Relationship to Head	Head
Sex	M
Color / Race	White
Age	28
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Washington Township
1935 Residence (County)	Keokuk County
Occupation	Laborer
Industry	Agriculture
Class of Worker	PW
Hours Worked	52
Income (1939)	450
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 James Hamilton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Dan Hamilton (~0.92 confidence) and mother Gertrude Hamilton (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Dan Hamilton

b. ~1880

Source father

● Household · direct · ~0.92

Mother

Gertrude Hamilton

b. ~1880

Source mother

● Household · direct · ~0.92

This person

Anchor record

James Hamilton

Head · 1940 · age 28 · b. ~1912 · 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 — Keokuk-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01172-01128)

Line	Name	Age	Relation	Occupation	Birthplace
41	Lela Brainard	16	Daughter	—	Iowa
42	Betty Lou Brainard	10	Daughter	—	Iowa
43	William E. Chapman	69	Head	Farmer	Iowa
44	Walter F. Chapman	46	Son	Laborer	Iowa
45	Violet Chapman	21	Granddaughter	Teacher	Iowa
46	James Hamilton THIS PERSON	28	Head	Laborer	Iowa
47	Eva Elizabeth Hamilton	18	Wife	—	Iowa
48	Melva Jean Hamilton	0	Daughter	—	Iowa
49	Charlie R. Gorman	39	Head	Farmer	Iowa
50	Ellen Gorman	31	Wife	—	Iowa
51	Alice Gorman	13	Daughter	—	Iowa
52	Ira Gorman	11	Daughter	—	Iowa
53	Willis Gorman	7	Son	—	Iowa
54	Kenneth Gorman	4	Son	—	Iowa
55	Isaac Hartman	68	Lodger	—	Illinois
56	Albert A. Kitzman	67	Head	Farmer	Germany
57	Ora Kitzman	56	Wife	—	Iowa
58	Edith Kitzman	29	Daughter	—	Iowa
59	Willis A. Garrett	44	Head	—	Iowa
60	Esther F. Garrett	41	Wife	—	Iowa
61	James Garrett	16	Son	—	Iowa
62	William Garrett	14	Son	—	Iowa
63	Pearl Garrett	11	Daughter	—	Iowa
64	Gerald Garrett	8	Son	—	Iowa
65	Barbara Garrett	5	Daughter	—	Iowa
66	Opal Clark	21	Daughter	—	Iowa
67	Harold Clark	0	Grandson	—	Iowa
68	David Dugger	30	Head	Farmer	Iowa
69	Edith Dugger	29	Wife	—	Iowa
70	James Hamilton	60	Head	Farmer	Iowa
71	Gertrude Hamilton	60	Wife	—	Iowa
72	Marjorie Hamilton	23	Daughter	—	Iowa
73	Cecil Smalley	54	Head	Farmer	Iowa
74	John Smalley	32	Son	Laborer	Iowa
75	Cecil Jr. Smalley	24	Son	Laborer	Iowa
76	Marjorie Smalley	22	Daughter	—	Iowa
77	Donald Smalley	20	Son	Laborer	Iowa
78	Richard Cook	20	Head	Farmer	Iowa
79	Juanita Cook	20	Wife	—	Iowa
80	Dorman Harty	42	Head	Farmer	Iowa

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Pedigree Summary

James

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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