RC
Robert Chapman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Greene-County, Illinois
Our Model Tree links this Robert Chapman across the 1920, 1930 and 1940 US Censuses in Greene-County, Illinois (XGBoost, ~Confirmed), with identified parents Lee & Nellie — first a head (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Greene-County, Illinois |
| Surname | Chapman |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Whitehall |
| 1935 Residence (County) | Greene |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Hours Worked | 60 |
| Income (1939) | 480 |
| Highest Grade | 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Whitehall Twp |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Roberta Chapman | Daughter | — | 4 | ~1936 |
| Donald Chapman | Son | — | 1 | ~1939 |
| William Chapman | Son | — | 3 | ~1937 |
| Robert Chapman | Head | — | 25 | ~1915 |
| Mary Chapman | Spouse | — | 21 | ~1919 |
Census Appearances
1920
Greene, Illinois
Son, age 5
Greene, Illinois · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Greene, Illinois
Son, age 15
Greene, Illinois · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | U.S. |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Greene-County, Illinois
Head, age 25
Greene-County, Illinois · implied b. ~1915 — 5 household members
| Surname | Chapman |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Whitehall |
| 1935 Residence (County) | Greene |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Hours Worked | 60 |
| Income (1939) | 480 |
| Highest Grade | 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Chapman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lee Chapman (~0.92 confidence) and mother Nellie Chapman (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lee Chapman
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Nellie Chapman
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Chapman
Head · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Greene-County, Illinois
Open full size
1940 US Federal Census — Greene-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00808-00520)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Russell Roodhouse | 39 | Head | Operator | Illinois |
| 2 | Mildred Roodhouse | 38 | Wife | — | Illinois |
| 3 | Bette Roodhouse | 17 | Daughter | — | Illinois |
| 4 | Jane Roodhouse | 16 | Daughter | — | Illinois |
| 5 | Marilyn Roodhouse | 10 | Daughter | — | Illinois |
| 6 | Robert Lacy | 49 | Head | Laborer | Illinois |
| 7 | Stella Lacy | 31 | Wife | — | Illinois |
| 8 | Doris Jean Lacy | 9 | Daughter | — | Illinois |
| 9 | Deloris Lacy | 8 | Daughter | — | Illinois |
| 10 | Robert Chapman THIS PERSON | 25 | Head | Laborer | Illinois |
| 11 | Mary Ann Chapman | 21 | Wife | — | Illinois |
| 12 | Roberta Chapman | 4 | Daughter | — | Illinois |
| 13 | William Chapman | 3 | Son | — | Illinois |
| 14 | Donald Chapman | 1 | Son | — | Illinois |
| 15 | Samuel Ford | 55 | Head | Laborer | Illinois |
| 16 | Ruth Ford | 23 | Wife | — | Illinois |
| 17 | Harry R. Ford | 3 | Son | — | Illinois |
| 18 | Clarence Ford | 31 | Head | Operator | Illinois |
| 19 | Guy Ford | 29 | Brother | Laborer | Illinois |
| 20 | James Ford | 14 | Nephew | — | Illinois |
| 21 | John Ford | 73 | Father | — | Illinois |
| 22 | Noah O. Henderson | 73 | Head | Operator | Illinois |
| 23 | Edna Henderson | 62 | Wife | — | Missouri |
| 24 | Jesse Mitts | 71 | Head | Operator | Kentucky |
| 25 | Mat Mitts | 70 | Wife | — | Kentucky |
| 26 | Oswald Ford | 24 | Head | Laborer | Illinois |
| 27 | Nellie Ford | 21 | Wife | — | Illinois |
| 28 | Hazel Mae Ford | 4 | Daughter | — | Illinois |
| 29 | Claude Pinkerton | 34 | Head | Operator | Illinois |
| 30 | Maggie Pinkerton | 38 | Wife | — | Illinois |
| 31 | Mattie Pinkerton | 19 | Daughter | — | Illinois |
| 32 | Lloyd Pinkerton | 17 | Son | — | Illinois |
| 33 | Jesse Pinkerton | 15 | Son | — | Illinois |
| 34 | Henry Roodhouse | 46 | Head | — | Illinois |
| 35 | Ann Roodhouse | 45 | Wife | — | Illinois |
| 36 | Dorothy Roodhouse | 23 | Daughter | Home Advisor | Illinois |
| 37 | Charles Roodhouse | 20 | Son | — | Illinois |
| 38 | Bennett Roodhouse | 8 | Son | — | Illinois |
| 39 | Paul Ford | 37 | Head | Laborer | Illinois |
| 40 | Litha Ford | 32 | Wife | — | Illinois |
Pedigree Summary
Robert
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)