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Mary Sparks — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Hancock-County, Ohio

Our Model Tree links this Mary Sparks across the 1930 and 1940 US Censuses in Hancock-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 7-person household.

Age 25 b. ~1915 Female Daughter Born: Indiana Single

1940 Census Record Details

Census Year1940
LocationHancock-County, Ohio
SurnameSparks
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age25
Marital StatusSingle
BirthplaceIndiana
1935 Residence (City)FINDLAY CITY
1935 Residence (County)HANCOCK
Additional Details
OccupationStenographer
IndustryOhio Oil Co
Class of WorkerPW
Hours Worked40
Income (1939)800
Highest GradeHs 4
1935 ResidenceSame House
Birth StateIndiana
Birth CountryUnited States
Birthplace (normalized)indiana
OccupationStenographer
Township / WardFindlay City
Est. Birth Year~1915

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.

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

Name Relation to head Relative to Mary Age Birth yr
Joan Sparks Daughter — 10 ~1930
Helen Sparks Daughter — 12 ~1928
Thomas Sparks Head — 46 ~1894
Lela Sparks Spouse — 46 ~1894
Mary Sparks Daughter — 25 ~1915
Carl Sparks Son — 23 ~1917
Norman Sparks Son — 17 ~1923

Census Appearances

1930
Hancock, Ohio
Daughter, age 15
Hancock, Ohio · implied b. ~1915 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Sparks
Given Name Mary E
Relationship to Head Daughter
Sex F
Color / Race White
Age 15
Marital Status Single
Birthplace Indiana
Father's Birthplace Indiana
Mother's Birthplace Indiana
Occupation none
Can Read/Write Yes
Birth State Indiana
Birth Country United States
Birthplace (normalized) indiana
1940
Hancock-County, Ohio
Daughter, age 25
Hancock-County, Ohio · implied b. ~1915 — 7 household members
Surname Sparks
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 25
Marital Status Single
Birthplace Indiana
1935 Residence (City) FINDLAY CITY
1935 Residence (County) HANCOCK
Occupation Stenographer
Industry Ohio Oil Co
Class of Worker PW
Hours Worked 40
Income (1939) 800
Highest Grade Hs 4
1935 Residence Same House
Birth State Indiana
Birth Country United States
Birthplace (normalized) indiana

Model Tree

An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Linked across censuses
Our Model Tree links Mary Sparks across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Sparks
Daughter · 1940 · age 25 · b. ~1915 · Ohio
★ You are viewing this record
Sibling
Helen Sparks
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norman Sparks
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Sparks
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Sparks
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Hancock-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03081-00546)

Line Name Age Relation Occupation Birthplace
1 Thomas Sparks 46 Head Fireman Indiana
2 Lela Sparks 46 Wife — Indiana
3 Mary Sparks THIS PERSON 25 Daughter Stenographer Indiana
4 Carl Sparks 23 Son — Indiana
5 Norman Sparks 17 Son — Indiana
6 Helen Sparks 12 Daughter — Ohio
7 Joan Sparks 10 Daughter — Ohio
8 Clarence Grover 48 Head Trucker Ohio
9 Bertha E Cooksey 66 Head — Ohio
10 Charles Greenland 46 Head Engine Foreman Ohio
11 Hazel Greenland 43 Wife — Ohio
12 Rita Greenland 20 Daughter — Ohio
13 Paul Morris 32 Head Draughtsman Penn
14 Gertrude Morris 28 Wife — Mich
15 Marilyn Morris 9 Daughter — Ohio
16 Shirley Morris 5 Daughter — Ohio
17 John Ebersole 33 Head Attendant Ohio
18 Doris Isabella Ebersole 34 Wife — Ohio
19 Clarence Ebersole 12 Son — Ohio
20 Ray Lowell Ebersole 0 Son — Ohio
21 Ray Bonine 51 Head Janitor Ohio
22 Nellie Bonine 50 Wife — Ohio
23 Arlene Bonine 21 Daughter Stenographer Ohio
24 Raymond Mcmahon 46 Head Acetylene Welder New York
25 Ruth Mcmahon 43 Wife — Ohio
26 Thomas Mcmahon 21 Son Truck Driver Ohio
27 Violet Mcmahon 21 Daughter in law Sewer Ohio
28 Arthur Fleck 40 Head Lineman Ohio
29 Agnes Fleck 38 Wife — Ohio
30 Agnes Catherine Fleck 16 Daughter — Ohio
31 Cecilia Ann Fleck 14 Daughter — Ohio
32 James Fleck 13 Son — Ohio
33 Louis Fleck 11 Son — Ohio
34 Phyllis Fleck 7 Daughter — Ohio
35 Bernard Fleck 5 Son — Ohio
36 Billy Fleck 3 Son — Ohio
37 Mary Theresa Fleck 1 Daughter — Ohio
38 George G Garling 64 Head Laborer Ohio
39 Millie Garling 56 Wife — Ohio
40 Albert Woodward 59 Brother in law Carpenter Ohio

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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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