RL
Robert Lucas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clark-County, Ohio
Our Model Tree links this Robert Lucas across the 1920, 1930 and 1940 US Censuses in Clark-County, Ohio (XGBoost, ~Confirmed), with identified parents Allen & William — first a son (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Male
Son
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Ohio |
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Occupation | Sign painter |
| Industry | Outdoor advertising |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Sign Painter |
| Township / Ward | Springfield |
| Est. Birth Year | ~1913 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Maude Dunning | Spouse | — | 53 | ~1887 |
| William Dunning | Head | — | 52 | ~1888 |
| Martha Dunning | Other | — | 87 | ~1853 |
| Jane Lucas | Daughter | — | 20 | ~1920 |
| Donald Lucas | Son | — | 13 | ~1927 |
| Robert Lucas | Son | — | 27 | ~1913 |
Census Appearances
1920
Clark, Ohio
Son, age 7
Clark, Ohio · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Clark, Ohio
Son, age 17
Clark, Ohio · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Laborer |
| Industry | Green House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Clark-County, Ohio
Son, age 27
Clark-County, Ohio · implied b. ~1913 — 6 household members
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Occupation | Sign painter |
| Industry | Outdoor advertising |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| 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 Lucas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Allen Lucas (~0.60 confidence) and father William Dunning (~0.92 confidence) and mother Anna Lucas (~0.92 confidence) and mother Maude Dunning (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.84
Father
Allen Lucas
b. ~1903
Source father
● Household
· direct · ~0.6
Father
William Dunning
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Anna Lucas
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Maude Dunning
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Lucas
Son · 1940 · age 27 · b. ~1913 · Ohio
★ You are viewing this record
Sibling
Jane Lucas
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Lucas
Sibling · 1940 · age 13
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 — Clark-County, Ohio
Open full size
1940 US Federal Census — Clark-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03040-00500)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jennie Nattermader | 38 | Wife | — | Ohio |
| 2 | Marion Nattermader | 15 | Daughter | — | Ohio |
| 3 | Rita Nattermader | 12 | Daughter | — | Ohio |
| 4 | Frances Nattermader | 10 | Daughter | — | Ohio |
| 5 | Joan Nattermader | 7 | Daughter | — | Ohio |
| 6 | Paul E. Nattermader | 2 | Son | — | Ohio |
| 7 | Harry Holdren | 25 | Head | Manager | Ohio |
| 8 | Jane O. Holdren | 27 | Wife | — | Ohio |
| 9 | Mary Ann Holdren | 3 | Daughter | — | Ohio |
| 10 | Frank J. Fulton | 29 | Head | Truck Driver | Ohio |
| 11 | Lula S. Fulton | 31 | Wife | — | Ohio |
| 12 | Edward H. Fulton | 8 | Son | — | Ohio |
| 13 | Roger Fulton | 2 | Son | — | Ohio |
| 14 | William Dunning | 52 | Head | Superintendent Operation | Ohio |
| 15 | Maude E. Dunning | 53 | Wife | — | Ohio |
| 16 | Martha Dunning | 87 | Mother | — | Ohio |
| 17 | Robert Lucas THIS PERSON | 27 | Son | Sign Painter | Ohio |
| 18 | Jane H. Lucas | 20 | Daughter | — | Ohio |
| 19 | Donald Lucas | 13 | Son | — | Ohio |
| 20 | Herbert Miller | 49 | Head | Feeder Setter | Ohio |
| 21 | Henrietta Miller | 46 | Wife | Laundress | Ohio |
| 22 | Emma Miller | 27 | Daughter | — | Ohio |
| 23 | Thomas Miller | 21 | Son | Leather Worker | Ohio |
| 24 | Edward Miller | 16 | Son | — | Ohio |
| 25 | Elmer Miller | 16 | Son | — | Ohio |
| 26 | Paul Miller | 13 | Son | — | Ohio |
| 27 | Pearl Miller | 10 | Daughter | — | Ohio |
| 28 | — | None | — | — | — |
| 29 | Pearl D. Furr | 43 | Head | Furnace Installer | Ohio |
| 30 | Anna Furr | 42 | Wife | — | Ohio |
| 31 | Gail E. Furr | 21 | Son | Helper | Ohio |
| 32 | Thelma Furr | 17 | Daughter | — | Ohio |
| 33 | Gerald Furr | 6 | Son | — | Ohio |
| 34 | Robert Kain | 39 | Head | Laborer | Ohio |
| 35 | Edith Kain | 33 | Wife | — | Ohio |
| 36 | Betty J. Kain | 4 | Daughter | — | Ohio |
| 37 | Robert Kain | 3 | Son | — | Ohio |
| 38 | Carolyn Kain | 1 | Daughter | — | Ohio |
| 39 | George Ackerman | 34 | Head | Assistant Foreman | South Dakota |
| 40 | Mabel Ackerman | 34 | Wife | — | Ohio |
Pedigree Summary
Robert + 2 siblings
Gen 1 · 4 parents
~0.84
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)