William Cook — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Orange-County, California

Our Model Tree links this William Cook across the 1920, 1930 and 1940 US Censuses in Orange-County, California (XGBoost, ~Confirmed), with identified parents Henry & Jennie — first a head (b.~1901), then head of a 3-person household.

Age 39 b. ~1901 Male Head Born: Michigan Married

1940 Census Record Details

Census Year	1940
Location	Orange-County, California
Surname	Cook
Given Name	William C
Relationship to Head	Head
Sex	M
Color / Race	White
Age	39
Marital Status	Married
Birthplace	Michigan
1935 Residence (City)	Tustin Judicial
Additional Details
Occupation	Ranch Co
Industry	PW
Class of Worker	2500
Highest Grade	H 4
1935 Residence	54
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan
Occupation	Ranch Co
Township / Ward	Tustin Judicial
Est. Birth Year	~1901

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 William	Age	Birth yr
William Cook	Head	—	39	~1901
Perry Cook	Son	—	15	~1925
Lois Cook	Spouse	—	37	~1903

Census Appearances

1920

Orange, California

Son, age 18

Orange, California · implied b. ~1902 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cook
Given Name	William C.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	18
Marital Status	Single
Birthplace	Michigan
Father's Birthplace	Michigan
Mother's Birthplace	Michigan
Occupation	Farmer
Industry	Ranch
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1930

Orange, California

Head, age 28

Orange, California · implied b. ~1902 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cook
Given Name	William C.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	28
Marital Status	Married
Birthplace	Michigan
Age at First Marriage	19
Father's Birthplace	Michigan
Mother's Birthplace	Michigan
Occupation	Farmer
Industry	Farming
Class of Worker	VVVV O
Can Read/Write	Yes
Home Owned/Rented	R
Radio Set	R
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1940

Orange-County, California

Head, age 39

Orange-County, California · implied b. ~1901 — 3 household members

Surname	Cook
Given Name	William C
Relationship to Head	Head
Sex	M
Color / Race	White
Age	39
Marital Status	Married
Birthplace	Michigan
1935 Residence (City)	Tustin Judicial
Occupation	Ranch Co
Industry	PW
Class of Worker	2500
Highest Grade	H 4
1935 Residence	54
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Henry Cook

b. ~1852

Source father

● Household · direct · ~0.92

Mother

Jennie Cook

b. ~1863

Source mother

● Household · direct · ~0.92

This person

Anchor record

William Cook

Head · 1940 · age 39 · b. ~1901 · California

★ You are viewing this record

Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Orange-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00274-01086)

Line	Name	Age	Relation	Occupation	Birthplace
41	Ray De Brouwer	47	Head	Ranch	Belgium
42	Marie De Brouwer	44	Wife	—	Belgium
43	Madeline De Brouwer	21	Daughter	Citrus Ind	Calif
44	Jessie Mollenbeck	43	Head	Citrus	Colorado
45	George Corey	43	Border	Shop	New Jersey
46	Nelson Arnold	57	Head	Farm	Calif
47	Ada H Arnold	53	Wife	—	Calif
48	Nelda L Arnold	22	Daughter	Warehouse	Calif
49	Robert L Arnold	19	Son	—	Calif
50	Victor Salcido	54	Head	Farm	Belgium
51	Louisa Salcido	52	Wife	—	Belgium
52	Alphonse Salcido	26	Son	Farm	Calif
53	Tayfiel Salcido	22	Son	Farm	Wisconsin
54	Adolph Salcido	18	Son	—	Calif
55	Emil Van Casteren	36	Head	Ranch	Belgium
56	Martha Van Casteren	31	Wife	—	Belgium
57	Frank X Van Casteren	11	Son	—	Calif
58	Camiel Haegeman	34	Head	Ranch	Belgium
59	Lizzie Haegeman	35	Wife	—	Mich
60	Arthur Haegeman	1	Son	—	Calif
61	Max H Glazner	31	Head	Lineman	Oklahoma
62	Minnie Glazner	36	Wife	—	Oklahoma
63	Billie M Glazner	9	Son	—	Okla
64	Morris S Glazner	2	Daughter	—	Okla
65	Roy F Justus	28	Head	Ranch Co	N Carolina
66	Helen D Justus	22	Wife	—	Ariz
67	David D Justus	5	Son	—	Calif
68	William D Justus	3	Son	—	Calif
69	Mary E Justus	2	Daughter	—	Calif
70	Albert L Eastman	49	Head	Ranch	Calif
71	Lelia Eastman	35	Wife	—	New Mexico
72	Edmond H Heuer	58	Head	Ranch Co	Calif
73	Bessie Heuer	58	Wife	—	Calif
74	William C Cook THIS PERSON	39	Head	Ranch Co	Michigan
75	Lois C Cook	37	Wife	—	Kansas
76	Perry W Cook	15	Son	—	Calif
77	Albert Swanson	48	Head	Ranch Co	Kansas
78	Georgia Swanson	40	Wife	Ranch Co	Missouri
79	Russell Munday	23	Head	Ranch	Oklahoma
80	Thelma Munday	20	Wife	—	Kansas

Search for William Cook

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Pedigree Summary

William

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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