John Underwood — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Isabella-County, Michigan

Our Model Tree links this John Underwood across the 1920, 1930 and 1940 US Censuses in Isabella-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 8-person household.

Age 62 b. ~1878 Male Head Born: Michigan Married

1940 Census Record Details

Census Year	1940
Location	Isabella-County, Michigan
Surname	Underwood
Given Name	John O
Relationship to Head	Head
Sex	M
Color / Race	White
Age	62
Marital Status	Married
Birthplace	Michigan
1935 Residence (City)	Fremont Twp
1935 Residence (County)	Isabella
Additional Details
Occupation	Laborer
Industry	Lumber Mill
Class of Worker	PW
Hours Worked	20
Income (1939)	40
Highest Grade	No 4
1935 Residence	Same place
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan
Occupation	Laborer
Township / Ward	Fremont Twp
Est. Birth Year	~1878

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.

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

Name	Relation to head	Relative to John	Age	Birth yr
Robert Underwood	Son	—	27	~1913
Anna Underwood	Spouse	—	51	~1889
Garry Underwood	Other	—		~1940
Francis Underwood	Son	—	31	~1909
Jack Underwood	Son	—	18	~1922
John Underwood	Head	—	62	~1878
Marjorie Underwood	Daughter	—	12	~1928
Gladis Underwood	Other	—	20	~1920

Census Appearances

1920

Isabella, Michigan

Head, age 42

Isabella, Michigan · implied b. ~1878 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Underwood
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Michigan
Father's Birthplace	Michigan
Mother's Birthplace	Michigan
Occupation	Farmer
Industry	General farm
Class of Worker	Emp
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1930

Isabella, Michigan

Head, age 53

Isabella, Michigan · implied b. ~1877 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Underwood
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Michigan
Age at First Marriage	27
Father's Birthplace	Michigan
Mother's Birthplace	Michigan
Occupation	Farmer
Industry	General Farm
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	O
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1940

Isabella-County, Michigan

Head, age 62

Isabella-County, Michigan · implied b. ~1878 — 8 household members

Surname	Underwood
Given Name	John O
Relationship to Head	Head
Sex	M
Color / Race	White
Age	62
Marital Status	Married
Birthplace	Michigan
1935 Residence (City)	Fremont Twp
1935 Residence (County)	Isabella
Occupation	Laborer
Industry	Lumber Mill
Class of Worker	PW
Hours Worked	20
Income (1939)	40
Highest Grade	No 4
1935 Residence	Same place
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

Model Tree

Linked across censuses

Our Model Tree links John Underwood across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

John Underwood

Head · 1940 · age 62 · b. ~1878 · Michigan

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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 — Isabella-County, Michigan Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01766-00205)

Line	Name	Age	Relation	Occupation	Birthplace
1	John O Underwood THIS PERSON	62	Head	Laborer	Michigan
2	Anna J Underwood	51	Wife	—	Michigan
3	Robert E Underwood	27	Son	Laborer	Michigan
4	Jack Underwood	18	Son	C.C.C. Camp	Michigan
5	Marjorie Underwood	12	Daughter	—	Michigan
6	Francis L Underwood	31	Son	Tractor Op	Michigan
7	Gladis F Underwood	20	Daughter-in-law	—	Illinois
8	Garry F Underwood	0	Grandson	—	Michigan
9	Enlon A Sanderson	69	Head	Farmer	Michigan
10	Minnie B Sanderson	61	Wife	—	New York
11	James E Sanderson	25	Son	Farmer	Michigan
12	Josephine L Sanderson	24	Daughter-in-law	—	Michigan
13	Dara Lee Sanderson	1	Granddaughter	—	Michigan
14	Ida L Demlow	64	Head	—	Michigan
15	Claude R Morey	42	Head	W.P.A.	Michigan
16	Mable M Morey	36	Wife	—	Michigan
17	Jennie B Morey	14	Daughter	—	Michigan
18	Claude Jr Morey	11	Son	—	Michigan
19	Doris J Morey	9	Daughter	—	Michigan
20	Sara Mae Morey	7	Daughter	—	Michigan
21	Hazel J Morey	4	Daughter	—	Michigan
22	Standford B Tint	31	Head	Farmer	Michigan
23	Marie J Tint	22	Wife	—	Michigan
24	James G Caldwell	74	Head	—	Michigan
25	Sarah A Caldwell	74	Wife	—	Penn
26	Arthur F Coolis	52	Head	Farmer	Michigan
27	Linsey T Booth	71	Head	—	Michigan
28	Emma Booth	68	Wife	—	Michigan
29	Milan E Eldred	27	Head	Truck Driver	Michigan
30	Ruby I Eldred	25	Wife	—	Michigan
31	Leonard M Eldred	1	Son	—	Michigan
32	Richard J Eldred	0	Son	—	Michigan
33	Ford O Morey	51	Head	Farmer	Michigan
34	Hazel G Morey	50	Wife	—	Michigan
35	Carol Lee Morey	8	Daughter	—	Michigan
36	Floyd G Morey	47	Head	Farmer	Michigan
37	Ezra E Morey	42	Wife	—	Michigan
38	Floyd V Morey	22	Son	Laborer	Michigan
39	Wallace E Morey	12	Son	—	Michigan
40	Benjamin Hagerman	74	Uncle	Laborer	Michigan

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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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