Sophia Johnson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Marquette-County, Michigan

Our Model Tree links this Sophia Johnson across the 1920, 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 6-person household.

Age 70 b. ~1870 Female Head Born: Finland Widowed

1940 Census Record Details

Census Year	1940
Location	Marquette-County, Michigan
Surname	Johnson
Given Name	Sophia
Relationship to Head	Head
Sex	F
Color / Race	White
Age	70
Marital Status	Widowed
Birthplace	Finland
1935 Residence (City)	Marquette
1935 Residence (County)	Marquette
Naturalization Status	Naturalized
Additional Details
Class of Worker	0
Highest Grade	No 3
1935 Residence	Same place
Birth Country	Finland
Birthplace (normalized)	finland
Township / Ward	Marquette
Est. Birth Year	~1870

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.

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

Name	Relation to head	Relative to Sophia	Age	Birth yr
Lillian Robar	Daughter	—	37	~1903
Donald Robar	Other	—	15	~1925
Frederick Robar	Other	—	38	~1902
Sophia Johnson	Head	—	70	~1870
Nancy Robar	Other	—	9	~1931
John Johnson	Son	—	45	~1895

Census Appearances

1920

Muskegon, Michigan

Head, age 49

Muskegon, Michigan · implied b. ~1871 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Sophia
Relationship to Head	Head
Sex	F
Color / Race	White
Age	49
Marital Status	Widowed
Birthplace	Finland
Year of Immigration	1895
Naturalization Status	Naturalized
Father's Birthplace	Finland
Mother's Birthplace	Finland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Swedish
Home Owned/Rented	O
Home Free/Mortgaged	F
Birth Country	Finland
Year of Naturalization	1900
Birthplace (normalized)	finland

1930

Marquette, Michigan

Head, age 60

Marquette, Michigan · implied b. ~1870 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Sophia A.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	60
Marital Status	Widowed
Birthplace	Finland
Naturalization Status	Naturalized
Year of Immigration	1890
Father's Birthplace	Finland
Mother's Birthplace	Finland
Can Read/Write	No
Mother Tongue	Finnish
Home Owned/Rented	R
Home Value / Rent	3500
Birth Country	Finland
Birthplace (normalized)	finland

1940

Marquette-County, Michigan

Head, age 70

Marquette-County, Michigan · implied b. ~1870 — 6 household members

Surname	Johnson
Given Name	Sophia
Relationship to Head	Head
Sex	F
Color / Race	White
Age	70
Marital Status	Widowed
Birthplace	Finland
1935 Residence (City)	Marquette
1935 Residence (County)	Marquette
Naturalization Status	Naturalized
Class of Worker	0
Highest Grade	No 3
1935 Residence	Same place
Birth Country	Finland
Birthplace (normalized)	finland

Model Tree

Linked across censuses

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

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This person

Anchor record

Sophia Johnson

Head · 1940 · age 70 · b. ~1870 · 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 — Marquette-County, Michigan Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01787-00113)

Line	Name	Age	Relation	Occupation	Birthplace
1	Viola Monaka	22	Wife	—	Mich
2	Robert Monaka	1	Son	—	Mich
3	George Monaka	0	Son	—	Mich
4	Napoleon Fortin	75	Head	—	Canada
5	Amelia Fortin	70	Wife	—	Canada
6	Helen Fortin	31	Daughter	—	Mich
7	Leroy Brown	55	Head	Machine Operator	Mich
8	Jean Brown	47	Wife	Bus Driver	Ohio
9	Noreen Brown	10	Daughter	—	Mich
10	Nancy William	70	Mother-in-law	—	Penna
11	Frank Beland	36	Head	Fireman	Mich
12	Florence Beland	37	Wife	—	Mich
13	Frances Beland	15	Daughter	—	Mich
14	Elaine Beland	14	Daughter	—	Mich
15	Marvin Beland	12	Son	—	Mich
16	Sophia Johnson THIS PERSON	70	Head	—	Finland
17	Lillian Robar	37	Daughter	—	Mich
18	Frederick Robar	38	Son-in-law	Switchman	Mich
19	Donald Robar	15	Grandson	—	Mich
20	Nancy Robar	9	Granddaughter	—	Mich
21	John Johnson	45	Son	Boiler Maker	Mich
22	Albert Parent	36	Head	Bartender	Mich
23	Laura Parent	31	Wife	—	Mich
24	Lois Ann Parent	8	Daughter	—	Mich
25	Harold Specker	37	Head	Laborer	Mich
26	Barbara Specker	24	Wife	—	Mich
27	Ronald Specker	4	Son	—	Mich
28	Grace B. Specker	3	Daughter	—	Mich
29	Sandra Specker	0	Daughter	—	Mich
30	Stanley Shimakis	60	Head	Laborer	Poland
31	Stella Shimakis	48	Wife	—	Mich
32	Ray Shimakis	25	Son	Truck Driver	Mich
33	Arthur Doresien	46	Head	Plumber	Mich
34	Jennie Doresien	44	Wife	—	Mich
35	Clarence Doresien	22	Son	Laborer	Mich
36	Virginia Doresien	20	Daughter	—	Mich
37	Madonna Doresien	16	Daughter	—	Mich
38	Richard Doresien	14	Son	—	Mich
39	Noreen Doresien	3	Daughter	—	Mich
40	Julius Senical	75	Head	—	Mich

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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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