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Robert Griffith — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Washington-County, Iowa

Our Model Tree links this Robert Griffith across the 1930 and 1940 US Censuses in Washington-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1910), then head of a 8-person household.

Age 30 b. ~1910 Male Son Born: Iowa Single

1940 Census Record Details

Census Year1940
LocationWashington-County, Iowa
SurnameGriffith
Given NameRobert H.
Relationship to HeadSon
SexM
Color / RaceWhite
Age30
Marital StatusSingle
BirthplaceIowa
1935 Residence (City)Franklin Twp
1935 Residence (County)Washington
Additional Details
OccupationFarmer
IndustryFarm
Class of WorkerOA
Hours Worked60
Income (1939)0
Highest GradeH-4
1935 ResidenceSame House
Birth StateIowa
Birth CountryUnited States
Birthplace (normalized)iowa
OccupationFarmer
Township / WardFranklin Twp
Est. Birth Year~1910

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 Robert Age Birth yr
Barbra Griffith Spouse — 72 ~1868
Henrietta Griffith Daughter — 39 ~1901
J Griffith Son — 33 ~1907
Warren Griffith Son — 41 ~1899
John Griffith Head — 71 ~1869
Chas Griffith Son — 46 ~1894
Robert Griffith Son — 30 ~1910
S Griffith Daughter — 36 ~1904

Census Appearances

1930
Washington, Iowa
Son, age 20
Washington, Iowa · implied b. ~1910 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Griffith
Given Name Robert F
Relationship to Head Son
Sex M
Color / Race White
Age 20
Marital Status Single
Birthplace Iowa
Father's Birthplace Iowa
Mother's Birthplace Iowa
Occupation Laborer
Industry Gen Farming
Class of Worker W
Can Read/Write Yes
Birth State Iowa
Birth Country United States
Birthplace (normalized) iowa
1940
Washington-County, Iowa
Son, age 30
Washington-County, Iowa · implied b. ~1910 — 8 household members
Surname Griffith
Given Name Robert H.
Relationship to Head Son
Sex M
Color / Race White
Age 30
Marital Status Single
Birthplace Iowa
1935 Residence (City) Franklin Twp
1935 Residence (County) Washington
Occupation Farmer
Industry Farm
Class of Worker OA
Hours Worked 60
Income (1939) 0
Highest Grade H-4
1935 Residence Same House
Birth State Iowa
Birth Country United States
Birthplace (normalized) iowa

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 Robert Griffith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Griffith
Son · 1940 · age 30 · b. ~1910 · Iowa
★ You are viewing this record
Sibling
J Griffith
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chas Griffith
Sibling · 1940 · age 46
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Griffith
Sibling · 1940 · age 41
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henrietta Griffith
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
S Griffith
Sibling · 1940 · age 36
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 — Washington-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01211-00198)

Line Name Age Relation Occupation Birthplace
1 Anna F. Kleese 42 Wife — Iowa
2 Wilma R. Kleese 13 Daughter — Iowa
3 Chas A. Schiebel 47 Head Farmer Illinois
4 Winifred E. Schiebel 42 Wife — Iowa
5 Rirchard M. Schiebel 22 Son Farmer Iowa
6 Elsie Stalder 20 Roomer School Teacher Iowa
7 Chas. R. Longer 42 Head Farmer Iowa
8 Geneva L. Longer 38 Wife — Iowa
9 Charlotte L. Longer 17 Daughter — Iowa
10 Deborah J. Longer 16 Daughter — Iowa
11 Daryl E. Longer 15 Son — Iowa
12 Gerald J. Longer 10 Son — Iowa
13 Ralph G. Kelsey 58 Head Manager Iowa
14 A. Valma Kelsey 56 Wife — Iowa
15 Lyle P. Kelsey 24 Son Hired Hand Iowa
16 Walter R. Longer 34 Head Farmer Iowa
17 Roxy P. Longer 32 Wife — Iowa
18 Elizabeth C. Longer 12 Daughter — Iowa
19 Willis W. Longer 6 Son — Iowa
20 John E. Griffith 71 Head — Iowa
21 Barbra A. Griffith 72 Wife — Iowa
22 Chas. S. Griffith 46 Son Farmer Iowa
23 Warren E. Griffith 41 Son Farmer Iowa
24 Henrietta M. Griffith 39 Daughter Doctor Iowa
25 S. Pauline Griffith 36 Daughter — Iowa
26 J. Edwin Griffith 33 Son Farmer Iowa
27 Robert H. Griffith THIS PERSON 30 Son Farmer Iowa
28 Edward F. Heck 39 Head Farmer Iowa
29 Irene A. Heck 29 Wife — Iowa
30 Jo-Ann D. Heck 5 Daughter — Iowa
31 Gerald E. Heck 3 Son — Iowa
32 Joyce Y. Heck 2 Daughter — Iowa
33 James E. Heck 0 Son — Iowa
34 Milada A. Hora 50 Mother-in-law — Iowa
35 Glen E. Miller 35 Head Farmer Iowa
36 Christie V. Miller 35 Wife — Iowa
37 Mildred M. Miller 16 Daughter — Iowa
38 Jean I. Miller 13 Daughter — Iowa
39 Glen B. Miller 11 Son — Iowa
40 Claire D. Neff 26 Head Farmer Iowa

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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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