RC
Robert Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Greene-County, Ohio
Our Model Tree links this Robert Carroll across the 1930 and 1940 US Censuses in Greene-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 12-person household.
Age 28
b. ~1912
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Greene-County, Ohio |
| Surname | Carroll |
| Given Name | Robert R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Ross Twp. |
| 1935 Residence (County) | Greene |
| Additional Details | |
| Occupation | Labour |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 380 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Labour |
| Township / Ward | Ross Twp |
| Est. Birth Year | ~1912 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Carroll | Son | — | 28 | ~1912 |
| Samuel Carroll | Son | — | 10 | ~1930 |
| Arthur Carroll | Head | — | 58 | ~1882 |
| Walter Carroll | Son | — | 30 | ~1910 |
| Maxine Carroll | Daughter | — | 22 | ~1918 |
| Dale Carroll | Son | — | 24 | ~1916 |
| Herbert Carroll | Son | — | 13 | ~1927 |
| Arie Carroll | Daughter | — | 26 | ~1914 |
| Hulstad Carroll | Son | — | 33 | ~1907 |
| Joe Carroll | Son | — | 16 | ~1924 |
| Opal Carroll | Daughter | — | 18 | ~1922 |
| Elnora Carroll | Spouse | — | 54 | ~1886 |
Census Appearances
1930
Greene, Ohio
Son, age 19
Greene, Ohio · implied b. ~1911 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Robert R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Greene-County, Ohio
Son, age 28
Greene-County, Ohio · implied b. ~1912 — 12 household members
| Surname | Carroll |
| Given Name | Robert R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Ross Twp. |
| 1935 Residence (County) | Greene |
| Occupation | Labour |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 380 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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.
Our Model Tree links Robert Carroll across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Carroll
Son · 1940 · age 28 · b. ~1912 · Ohio
★ You are viewing this record
Sibling
Arie Carroll
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Opal Carroll
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hulstad Carroll
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Carroll
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Carroll
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Carroll
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maxine Carroll
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Carroll
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Carroll
Sibling · 1940 · age 24
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 — Greene-County, Ohio
Open full size
1940 US Federal Census — Greene-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03074-00482)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Floe Davis | 74 | Grand mother | — | Illinois |
| 2 | Robert Jones | 25 | Head | Labour | Ohio |
| 3 | Mabel Jones | 23 | Wife | — | Ohio |
| 4 | Robert Jr. Jones | 4 | Son | — | Ohio |
| 5 | S. L. Flaugher | 49 | Head | Operator | Ohio |
| 6 | Nelle Flaugher | 48 | Wife | — | Ohio |
| 7 | Kenneth Flaugher | 19 | Son | — | Ohio |
| 8 | Harold Flaugher | 17 | Son | — | Ohio |
| 9 | Richard N. Flaugher | 4 | Son | — | Ohio |
| 10 | J. C. Spahr | 53 | Head | Operator | Ohio |
| 11 | Estel Spahr | 52 | Wife | — | Ohio |
| 12 | E. T. Marshall | 47 | Head | Operator | Kentucky |
| 13 | Maud Marshall | 42 | Wife | — | Kentucky |
| 14 | Grena Marshall | 19 | Daughter | — | Iowa |
| 15 | Helen Marshall | 16 | Daughter | — | Iowa |
| 16 | John B. Marshall | 13 | Son | — | Iowa |
| 17 | Dean Marshall | 11 | Son | — | Iowa |
| 18 | Wayne Marshall | 9 | Son | — | Iowa |
| 19 | Daniel O'Conner | 62 | Head | Labour | Kentucky |
| 20 | Mary O'Conner | 61 | Wife | — | Kentucky |
| 21 | Paul Butts | 28 | Head | Labour | Ohio |
| 22 | Ruth Butts | 24 | Wife | — | Ohio |
| 23 | Larry Butts | 4 | Son | — | Ohio |
| 24 | Annett Gordin | 34 | Head | Operator | Ohio |
| 25 | Elizabeth Gordin | 34 | Wife | — | Ohio |
| 26 | Dean Gordin | 4 | Son | — | Ohio |
| 27 | Sam T. Turnbull | 72 | Head | Operator | Ohio |
| 28 | Gertrude Turnbull | 68 | Wife | — | Ohio |
| 29 | Arthur C. Carroll | 58 | Head | Labour | Ohio |
| 30 | Elnora Carroll | 54 | Wife | — | Ohio |
| 31 | Hulstad V. Carroll | 33 | Son | Labour | Ohio |
| 32 | Walter L. Carroll | 30 | Son | Mechanic | Ohio |
| 33 | Robert R. Carroll THIS PERSON | 28 | Son | Labour | Ohio |
| 34 | Arie Carroll | 26 | Daughter | House Maid | Ohio |
| 35 | Dale Carroll | 24 | Son | Grinding | Ohio |
| 36 | Maxine Carroll | 22 | Daughter | — | Ohio |
| 37 | Opal Carroll | 18 | Daughter | — | Ohio |
| 38 | Joe Carroll | 16 | Son | — | Ohio |
| 39 | Herbert Carroll | 13 | Son | — | Ohio |
| 40 | Samuel Carroll | 10 | Son | — | Ohio |
Related Census Records
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)