RC
Robert Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Guernsey-County, Ohio
Our Model Tree links this Robert Clark across the 1920, 1930 and 1940 US Censuses in Guernsey-County, Ohio (XGBoost, ~Confirmed), with identified parents James & Walter — 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 | Guernsey-County, Ohio |
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cambridge City |
| 1935 Residence (County) | Guernsey |
| Additional Details | |
| Occupation | Mill Worker |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 225 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Mill Worker |
| Township / Ward | Cambridge 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 |
|---|---|---|---|---|
| Walter Clark | Head | — | 49 | ~1891 |
| Robert Clark | Son | — | 22 | ~1918 |
| Russell Clark | Son | — | 26 | ~1914 |
| Lula Clark | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Guernsey, Ohio
Son, age 3
Guernsey, Ohio · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Guernsey, Ohio
Son, age 13
Guernsey, Ohio · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Guernsey-County, Ohio
Son, age 22
Guernsey-County, Ohio · implied b. ~1918 — 4 household members
| Surname | Clark |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cambridge City |
| 1935 Residence (County) | Guernsey |
| Occupation | Mill Worker |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 225 |
| Highest Grade | Hs 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 James Clark (~0.92 confidence) and father Walter Clark (~0.92 confidence) and father Edward Clark (~0.92 confidence) and mother Lula Clark (~0.92 confidence) and mother Ina Clark (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Clark
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Walter Clark
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Edward Clark
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Lula Clark
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Ina Clark
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Clark
Son · 1940 · age 22 · b. ~1918 · Ohio
★ You are viewing this record
Sibling
Russell Clark
Sibling · 1940 · age 26
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 — Guernsey-County, Ohio
Open full size
1940 US Federal Census — Guernsey-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03075-00152)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter L. Clark | 49 | Head | Mill Worker | Ohio |
| 2 | Lula Clark | 48 | Wife | — | Ohio |
| 3 | Russell Clark | 26 | Son | Truck Driver | Ohio |
| 4 | Robert Clark THIS PERSON | 22 | Son | Mill Worker | Ohio |
| 5 | Walter Matthews | 61 | Head | Carpenter | Ohio |
| 6 | Ellen M. Matthews | 60 | Wife | — | Ohio |
| 7 | Lester Jones | 36 | Lodger | Truck Driver | Ohio |
| 8 | Nellie Jones | 35 | Lodger | — | Ohio |
| 9 | Katherine Taylor | 68 | Head | Seamstress | Ohio |
| 10 | Arthur K. Morris | 33 | Head | Presser | Ohio |
| 11 | Katherine Morris | 29 | Wife | — | Ohio |
| 12 | Donna Morris | 3 | Daughter | — | Ohio |
| 13 | John Elvin Mcelroy | 41 | Head | Potter | Ohio |
| 14 | Naomi Mcelroy | 40 | Wife | — | Ohio |
| 15 | Finis Ed. Mcelroy | 20 | Son | New Worker | Ohio |
| 16 | James Ward Mcelroy | 11 | Son | — | Ohio |
| 17 | Wilmer Gray | 41 | Head | Mill Worker | Ohio |
| 18 | Faye Gray | 42 | Wife | — | Ohio |
| 19 | Edwin Gray | 20 | Son | Pin Boy | Ohio |
| 20 | Lehilla Gray | 14 | Daughter | — | Ohio |
| 21 | Wilmer Jr. Gray | 10 | Son | — | Ohio |
| 22 | Dwight Gray | 8 | Son | — | Ohio |
| 23 | Glenna Bedford | 31 | Head | Filler | Ohio |
| 24 | Jerry Bedford | 9 | Son | — | Ohio |
| 25 | William Costello | 41 | Lodger | Glass Worker | Ohio |
| 26 | Virgil Fitzgerald | 26 | Head | Rubber Tire Driver | Ohio |
| 27 | Gladys Fitzgerald | 23 | Wife | Sales Lady | Ohio |
| 28 | Donna Kay Fitzgerald | 5 | Daughter | — | Ohio |
| 29 | Jackie Lee Fitzgerald | 3 | Son | — | Ohio |
| 30 | Jesse Mills | 64 | Father-in-law | Farmer | Ohio |
| 31 | Bernice Gibson | 18 | Maid | Maid | Ohio |
| 32 | David Wogan | 69 | Head | Mill Worker | Ohio |
| 33 | Katherine Wogan | 69 | Wife | — | Ohio |
| 34 | Earl Pontius | 42 | Step-son | Tool Keeper | Penn |
| 35 | Maryland Pontius | 10 | Step-daughter | — | Ohio |
| 36 | Donald Lee Pontius | 7 | Step-son | — | Ohio |
| 37 | Jesse W. Gay | 68 | Head | — | Ohio |
| 38 | Martha E. Gay | 59 | Wife | Laundress | Ohio |
| 39 | Ernest E. Gay | 32 | Son | Mill Worker | Ohio |
| 40 | John A. Young | 52 | Head | Mill Worker | Ohio |
Pedigree Summary
Robert + 1 sibling
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)