John Dennis — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Ionia-County, Michigan

Our Model Tree links this John Dennis across the 1920, 1930 and 1940 US Censuses in Ionia-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1855), then head of a 3-person household.

Age 85 b. ~1855 Male Head Born: Michigan Widowed

1940 Census Record Details

Census Year	1940
Location	Ionia-County, Michigan
Surname	Dennis
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	85
Marital Status	Widowed
Birthplace	Michigan
1935 Residence (City)	KEENE TOWNSHIP
1935 Residence (County)	IONIA
Additional Details
Highest Grade	No 5
1935 Residence	Same place
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan
Township / Ward	Keene Township
Est. Birth Year	~1855

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
Marguerita Dennis	Other	—	14	~1926
John Dennis	Head	—	85	~1855
Phila Dennis	Daughter	—	62	~1878

Census Appearances

1920

Ionia, Michigan

Head, age 65

Ionia, Michigan · implied b. ~1855

● Primary link · ~Confirmed · 1 source

XGBoost

Surname	Dennis
Given Name	John O.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	65
Marital Status	Widowed
Birthplace	Michigan
Father's Birthplace	Canada
Mother's Birthplace	New York
Occupation	Farming
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Home Owned/Rented	O
Home Free/Mortgaged	M
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1930

Ionia, Michigan

Head, age 75

Ionia, Michigan · implied b. ~1855 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Dennis
Given Name	John O.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	75
Marital Status	Widowed
Birthplace	Michigan
Father's Birthplace	Canada English
Mother's Birthplace	New York
Occupation	Farmer
Industry	General farm
Can Read/Write	Yes
Home Owned/Rented	O
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1940

Ionia-County, Michigan

Head, age 85

Ionia-County, Michigan · implied b. ~1855 — 3 household members

Surname	Dennis
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	85
Marital Status	Widowed
Birthplace	Michigan
1935 Residence (City)	KEENE TOWNSHIP
1935 Residence (County)	IONIA
Highest Grade	No 5
1935 Residence	Same place
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

Model Tree

Linked across censuses

Our Model Tree links John Dennis 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 Dennis

Head · 1940 · age 85 · b. ~1855 · 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 — Ionia-County, Michigan Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01764-00660)

Line	Name	Age	Relation	Occupation	Birthplace
1	Edward Davenport	5	Son	—	Michigan
2	Raymond Russell	38	Head	Farm Laborer	Michigan
3	Dorothy Shay	26	Lodger	Housekeeper	Michigan
4	Elmer F. Cilley	76	Head	Farmer	Michigan
5	Margaret M. Cilley	63	Wife	—	Michigan
6	Harry Connor	28	Head	Farmer	Michigan
7	Etna C. Connor	59	Wife	—	Michigan
8	Hugo W. Connor	28	Son	Farm Laborer	Michigan
9	William Converse	56	Head	Farmer	Michigan
10	Norma Converse	48	Wife	—	Michigan
11	Donald Kirchman	14	Lodger	—	Michigan
12	Maxine Kirchman	12	Lodger	—	Michigan
13	Pauline Kirchman	10	Lodger	—	Michigan
14	Howard Kirchman	8	Lodger	—	Michigan
15	Clyde Moffit	34	Head	Farmer	Michigan
16	Elsie M. Moffit	34	Wife	—	Michigan
17	Elizabeth Jean Moffit	15	Daughter	—	Michigan
18	Robert C. Moffit	12	Son	—	Michigan
19	Mary E. Moffit	7	Daughter	—	Michigan
20	Eugene Thompson	48	Lodger	Farm Laborer	Michigan
21	Emil Pereira	66	Head	Farmer	Germany
22	Gertrude Pereira	60	Wife	—	Germany
23	Ernest Pinckney	63	Head	Farmer	Michigan
24	Minnie Pinckney	61	Wife	—	Michigan
25	Calvin Pinckney	21	Son	Farm Laborer	Michigan
26	Alvah J. Fuller	51	Head	Pattern Maker	Michigan
27	Mamie Fuller	28	Wife	—	Michigan
28	Bonnie Lou Fuller	10	Daughter	—	Michigan
29	Ivan R. Fuller	8	Son	—	Michigan
30	Myrta Ann Fuller	6	Daughter	—	Michigan
31	Faye Sherman	25	Lodger	Farm Laborer	Michigan
32	Godfrey Roth	54	Head	Farmer	Switzerland
33	Rose Roth	52	Wife	—	Switzerland
34	Edwin Roth	20	Son	Farm Laborer	Michigan
35	Rudolph Roth	18	Son	—	Michigan
36	June Roth	18	Daughter	—	Michigan
37	Walter Roth	15	Son	—	Michigan
38	John Dennis THIS PERSON	85	Head	—	Michigan
39	Phila Effie Dennis	62	Daughter	—	Michigan
40	Marguerita Dennis	14	Grand Daughter	—	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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