RC
Robert Chapman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lake-County, Ohio
Our Model Tree links this Robert Chapman across the 1920, 1930 and 1940 US Censuses in Lake-County, Ohio (XGBoost, ~Confirmed), with identified parents B & Benjamin — first a son (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Ohio |
| Surname | Chapman |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Painesville City |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Auto Garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Mechanic |
| Township / Ward | Painesville City |
| Est. Birth Year | ~1916 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| George Chapman | Son | — | 18 | ~1922 |
| Grace Chapman | Daughter | — | 5 | ~1935 |
| Robert Chapman | Son | — | 24 | ~1916 |
| Elsa Chapman | Spouse | — | 48 | ~1892 |
| Fred Rock | Other | — | 74 | ~1866 |
| Doris Chapman | Daughter | — | 13 | ~1927 |
| Benjamin Chapman | Head | — | 49 | ~1891 |
Census Appearances
1920
Lake, Ohio
Son, age 3
Lake, Ohio · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | Robert G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Lake, Ohio
Son, age 14
Lake, Ohio · implied b. ~1916 — 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 | 14 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lake-County, Ohio
Son, age 24
Lake-County, Ohio · implied b. ~1916 — 7 household members
| Surname | Chapman |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Painesville City |
| 1935 Residence (County) | Lake |
| Occupation | Mechanic |
| Industry | Auto Garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Chapman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father B Chapman (~0.92 confidence) and father Benjamin Chapman (~0.92 confidence) and father Benjamin Chapman (~0.92 confidence) and mother Effie Chapman (~0.92 confidence) and mother Elsa Chapman (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
B Chapman
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Benjamin Chapman
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Benjamin Chapman
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Effie Chapman
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Elsa Chapman
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Chapman
Son · 1940 · age 24 · b. ~1916 · Ohio
★ You are viewing this record
Sibling
Grace Chapman
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Chapman
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Chapman
Sibling · 1940 · age 18
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 — Lake-County, Ohio
Open full size
1940 US Federal Census — Lake-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03095-00177)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Jr. Lefelhoc | 14 | son | S | Ohio |
| 2 | Margaret Lefelhoc | 12 | daughter | — | Ohio |
| 3 | Robert Lefelhoc | 10 | son | — | Ohio |
| 4 | Eugene Lefelhoc | 8 | son | — | Ohio |
| 5 | Howard Gordon | 27 | Head | Mechanic | Ohio |
| 6 | Matilda Gordon | 25 | wife | — | Massachusetts |
| 7 | Clarence A. Pixler | 28 | Head | Electrician | Ohio |
| 8 | Wilma Pixler | 23 | wife | — | West Virginia |
| 9 | Clarence D. Pixler | 4 | son | — | Ohio |
| 10 | Richard Pixler | 2 | son | — | Ohio |
| 11 | Benjamin Chapman | 49 | Head | Mechanic | Ohio |
| 12 | Elsa Chapman | 48 | wife | — | Ohio |
| 13 | Robert Chapman THIS PERSON | 24 | son | Mechanic | Ohio |
| 14 | George Chapman | 18 | son | Carrier | Ohio |
| 15 | Doris Chapman | 13 | daughter | — | Ohio |
| 16 | Grace Chapman | 5 | daughter | — | Ohio |
| 17 | Fred Rock | 74 | Boarder | — | Ohio |
| 18 | Lloyd Backer | 29 | Head | Dairyman | Ohio |
| 19 | Laura Backer | 27 | wife | Preparing Stock | Ohio |
| 20 | John Dickey | 78 | Head | — | Canada |
| 21 | Minnie Dickey | 70 | wife | — | Illinois |
| 22 | Howard Wheeler | 58 | Head | Painter | Ohio |
| 23 | Jessie Wheeler | 52 | wife | — | Ohio |
| 24 | Roy Court | 35 | Head | Service Manager | Ohio |
| 25 | Evelyn Court | 30 | wife | Bookkeeper | North Carolina |
| 26 | Harry H. Ryan | 48 | Head | Pipe Fitter | Kansas |
| 27 | Ethel Ryan | 41 | wife | — | Michigan |
| 28 | George Ryan | 22 | son | Machinist | Ohio |
| 29 | Stanley Ryan | 21 | son | Stableman | Ohio |
| 30 | Stella Ryan | 21 | daughter | — | Ohio |
| 31 | Robert Ryan | 15 | son | Carrier | Ohio |
| 32 | Rudolph Kinkovic | 57 | Head | Refiner | Jugo Slavia |
| 33 | Mary C. Kinkovic | 56 | wife | — | Hungary |
| 34 | Mary Ann Kinkovic | 23 | daughter | Crier | Pennsylvania |
| 35 | Edwin Heeley | 55 | Head | Janitor | Maine |
| 36 | Margaret Heeley | 49 | wife | — | Massachusetts |
| 37 | Paul E. Heeley | 26 | son | Basket Maker | Ohio |
| 38 | Delbert Ludwig | 44 | Head | Electrician | Wisconsin |
| 39 | Katherine Ludwig | 39 | wife | — | Ohio |
| 40 | William Ludwig | 12 | son | — | Ohio |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 5 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)