RC
Robert Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this Robert Clark across the 1920, 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed), with identified parents Robert & Bernard — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | Clark |
| Given Name | Robert T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland Heights City |
| 1935 Residence (County) | Cuyahoga |
| Additional Details | |
| Occupation | Chemist |
| Industry | Oil Co. |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 1230 |
| Highest Grade | C-4 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Chemist |
| Township / Ward | Cleveland Heights City |
| Est. Birth Year | ~1918 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Bernard Clark | Head | — | 52 | ~1888 |
| Frances Strock | Other | — | 26 | ~1914 |
| Robert Clark | Son | — | 22 | ~1918 |
| Florence Clark | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Cuyahoga, Ohio
Son, age 1
Cuyahoga, Ohio · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 11
Cuyahoga, Ohio · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Son, age 22
Cuyahoga-County, Ohio · implied b. ~1918 — 4 household members
| Surname | Clark |
| Given Name | Robert T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland Heights City |
| 1935 Residence (County) | Cuyahoga |
| Occupation | Chemist |
| Industry | Oil Co. |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 1230 |
| Highest Grade | C-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 Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Clark (~0.92 confidence) and father Bernard Clark (~0.92 confidence) and father Robert Clark (~0.92 confidence) and mother Janet Clark (~0.92 confidence) and mother Florence Clark (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Clark
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Bernard Clark
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Robert Clark
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Janet Clark
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Florence Clark
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Clark
Son · 1940 · age 22 · b. ~1918 · Ohio
★ 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 — Cuyahoga-County, Ohio
Open full size
1940 US Federal Census — Cuyahoga-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03049-00531)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Electa Johnson | 67 | Wife | — | Indiana |
| 2 | Russell B. Johnson | 36 | Son | Clerk | Ohio |
| 3 | (Mistake) Johnson | None | — | — | — |
| 4 | Robert C. Johnson | 37 | Son | Clerk | Ohio |
| 5 | Betty Johnson | 34 | Daughter-in-law | — | Pennsylvania |
| 6 | Philip Johnson | 2 | Grandson | — | Ohio |
| 7 | Gail Johnson | 1 | Granddaughter | — | Ohio |
| 8 | Harry F. Blackman | 42 | Head | Attorney | Ohio |
| 9 | Sara Blackman | 40 | Wife | — | Ohio |
| 10 | Nelson M. Blackman | 16 | Son | — | Ohio |
| 11 | Arthur D. Blackman | 13 | Son | — | Ohio |
| 12 | Naomi M. Goldberg | 34 | Sister-in-law | Teacher | Ohio |
| 13 | Sybil Noll | 59 | Head | — | Ohio |
| 14 | Edna Bailey | 55 | Partner | — | Ohio |
| 15 | Arthur A. Weidner | 54 | Head | Carpenter | Ohio |
| 16 | Charlotte Weidner | 48 | Wife | — | Ohio |
| 17 | Gordon A. Weidner | 25 | Son | Cost Accountant | Ohio |
| 18 | Leora Weidner | 20 | Daughter | — | Ohio |
| 19 | Raymond Weidner | 12 | Son | — | Ohio |
| 20 | Hoburn Davis | 40 | Head | School Administrator | Ohio |
| 21 | Dorothy Davis | 39 | Wife | — | Ohio |
| 22 | Alan Davis | 15 | Son | — | Ohio |
| 23 | Catherine Davis | 6 | Daughter | — | Ohio |
| 24 | Fred E. Griesinger | 53 | Head | Medical Doctor | Ohio |
| 25 | Ilsa Griesinger | 53 | Wife | — | Ohio |
| 26 | Frederick Griesinger | 20 | Son | — | Ohio |
| 27 | Bernard Clark | 52 | Head | Executive | Ohio |
| 28 | Florence Clark | 54 | Wife | — | Ohio |
| 29 | Robert T. Clark THIS PERSON | 22 | Son | Chemist | Ohio |
| 30 | Frances Strock | 26 | Lodger | Teacher | Ohio |
| 31 | David Johnson | 60 | Head | — | Illinois |
| 32 | Beatrice Johnson | 63 | Wife | — | Illinois |
| 33 | John Mcmillen | 33 | Head | Accountant | Ohio |
| 34 | Janice Mcmillen | 29 | Wife | — | Ohio |
| 35 | Elizabeth Mcmillen | 5 | Daughter | — | Ohio |
| 36 | Ada May Bale | 53 | Head | — | Missouri |
| 37 | Victor Vroman | 24 | Nephew | Laborer | Ohio |
| 38 | Alanson Allen | 62 | Head | Engineer | Ohio |
| 39 | Florence M. Allen | 62 | Wife | — | Ohio |
| 40 | William Farrar | 42 | Head | Manager | Ohio |
Pedigree Summary
Robert
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)