Mary Long — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Kent-County, Michigan

Our Model Tree links this Mary Long across the 1920, 1930 and 1940 US Censuses in Kent-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 4-person household.

Age 52 b. ~1888 Female Spouse Born: Michigan Married

1940 Census Record Details

Census Year	1940
Location	Kent-County, Michigan
Surname	Long
Given Name	Mary E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Michigan
1935 Residence (City)	Grand Rapids
1935 Residence (County)	Kent
Additional Details
Highest Grade	No 8
1935 Residence	Same place
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan
Township / Ward	Grand Rapids
Est. Birth Year	~1888

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Wilber Long	Head	—	53	~1887
Charles Long	Son	—	21	~1919
Robert Long	Son	—	19	~1921
Mary Long	Spouse	—	52	~1888

Census Appearances

1920

Kent, Michigan

Spouse, age 31

Kent, Michigan · implied b. ~1889 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Long
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	31
Marital Status	Married
Birthplace	Michigan
Father's Birthplace	Germany
Mother's Birthplace	Michigan
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1930

Kent, Michigan

Spouse, age 41

Kent, Michigan · implied b. ~1889 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Long
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Michigan
Age at First Marriage	21
Father's Birthplace	Germany
Mother's Birthplace	Michigan
Can Read/Write	Yes
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

1940

Kent-County, Michigan

Spouse, age 52

Kent-County, Michigan · implied b. ~1888 — 4 household members

Surname	Long
Given Name	Mary E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Michigan
1935 Residence (City)	Grand Rapids
1935 Residence (County)	Kent
Highest Grade	No 8
1935 Residence	Same place
Birth State	Michigan
Birth Country	United States
Birthplace (normalized)	michigan

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Long

Spouse · 1940 · age 52 · b. ~1888 · 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 — Kent-County, Michigan Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01900-00757)

Line	Name	Age	Relation	Occupation	Birthplace
1	Helen E Dudek	37	Head	Switch Board Operator	Michigan
2	Stephanie Dudek	25	Sister	Saleslady	Michigan
3	Anna Dudek	61	Mother	—	Poland
4	Dorothy G Pelkey	38	Head	Beauty Operator	Michigan
5	Ray B Pelkey	16	Son	Delivery Boy	Michigan
6	Hattie Francisco	58	Mother	Elevator Starter	Michigan
7	Wilber W Long	53	Head	Fireman	Indiana
8	Mary E Long THIS PERSON	52	Wife	—	Michigan
9	Charles F Long	21	Son	Collector	Michigan
10	Robert G Long	19	Son	—	Michigan
11	George S Waldo	22	Head	Press Feeder	Michigan
12	May E Waldo	23	Wife	—	Michigan
13	George Dale Waldo	0	Son	—	Michigan
14	Walter J Pelkey	38	Head	Grease And Battery Man	Michigan
15	Louise D Pelkey	25	Wife	—	Michigan
16	James W Pelkey	6	Son	—	Michigan
17	Peter Vandermeer	44	Head	Truck Driver	Netherlands
18	Louise Vandermeer	39	Wife	—	Germany
19	Lambert Vandermeer	14	Son	—	Michigan
20	Cornelius Vandermeer	10	Son	—	Michigan
21	Peter John Vandermeer	8	Son	—	Michigan
22	Arthur J Vandermeer	3	Son	—	Michigan
23	Peter Van Dyke	65	Head	—	Netherlands
24	Rose Kaloff	50	Head	—	Syria
25	John P Walsh	56	Head	Senior Clerk	Michigan
26	Isabel M Walsh	56	Wife	—	Michigan
27	Katherine R Walsh	23	Daughter	Stenographer	Michigan
28	Geraldine Walsh	20	Daughter	—	Michigan
29	Betty R Walsh	18	Daughter	—	Michigan
30	Stella C Goch	42	Head	Sewing	Pennsylvania
31	Rosa Ann Goch	10	Daughter	—	Michigan
32	Herbert Williams	33	Head	Fireman	Michigan
33	Clara W Williams	28	Wife	—	Ohio
34	Maude S Marshall	50	Head	—	Michigan
35	Fred G Erbaugh	82	Head	—	England
36	Emma Erbaugh	69	Wife	—	Illinois
37	Harold Emelander	25	Head	Buffer	Michigan
38	Ann Emelander	21	Wife	Waitress	Michigan
39	Kenneth J Emelander	2	Son	—	Michigan
40	Robert S Shears	46	Head	Fireman	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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