RC
Roy Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Oliver-County, North Dakota
Our Model Tree links this Roy Clark across the 1920, 1930 and 1940 US Censuses in Oliver-County, North Dakota (XGBoost, ~Confirmed), with identified parents Samuel & Lily — first a son (b.~1914), then head of a 7-person household.
Age 26
b. ~1914
Male
Son
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oliver-County, North Dakota |
| Surname | Clark |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | T-143-N. R-86-W Block Nos. |
| 1935 Residence (County) | Oliver |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 500 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Laborer |
| Township / Ward | T143N R86W Block Nos |
| Est. Birth Year | ~1914 |
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 Roy | Age | Birth yr |
|---|---|---|---|---|
| Lily Clark | Spouse | — | 58 | ~1882 |
| Roy Clark | Son | — | 26 | ~1914 |
| Mable Clark | Daughter | — | 43 | ~1897 |
| Raymond Clark | Son | — | 19 | ~1921 |
| Rosy Clark | Daughter | — | 16 | ~1924 |
| Glenn Clark | Son | — | 23 | ~1917 |
| S Clark | Head | — | 63 | ~1877 |
Census Appearances
1920
Oliver, North …
Son, age 6
Oliver, North Dakota · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Roy R |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | West Virginia |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Oliver, North …
Son, age 16
Oliver, North Dakota · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Roy |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | West Virginia |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Oliver-County, North …
Son, age 26
Oliver-County, North Dakota · implied b. ~1914 — 7 household members
| Surname | Clark |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | T-143-N. R-86-W Block Nos. |
| 1935 Residence (County) | Oliver |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 500 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Roy Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Samuel Clark (~0.92 confidence) and mother Lily Clark (~0.92 confidence) and mother Nellie Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Clark
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Lily Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Nellie Clark
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Roy Clark
Son · 1940 · age 26 · b. ~1914 · North Dakota
★ You are viewing this record
Sibling
Mable Clark
Sibling · 1940 · age 43
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenn Clark
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosy Clark
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Clark
Sibling · 1940 · age 19
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 — Oliver-County, North Dakota
Open full size
1940 US Federal Census — Oliver-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03008-00874)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alfred Rohn | 25 | Son | Farmer | North Dakota |
| 2 | Ida Rohn | 21 | Daughter | — | North Dakota |
| 3 | Erma Rohn | 12 | Daughter | — | North Dakota |
| 4 | Walter Kuch | 32 | Head | Farmer | North Dakota |
| 5 | Freda Kuch | 24 | Wife | — | North Dakota |
| 6 | Eugene Kuch | 7 | Son | — | North Dakota |
| 7 | Carl M. Kuch | 61 | Head | Farmer | Russia |
| 8 | Pauline Kuch | 61 | Wife | — | Russia |
| 9 | Arthur Abbers | 30 | Head | Farmer | North Dakota |
| 10 | Rose Abbers | 27 | Wife | — | North Dakota |
| 11 | La Donna Abbers | 1 | Daughter | — | North Dakota |
| 12 | Gust Richter | 42 | Head | Farmer | South Dakota |
| 13 | Augustena Richter | 38 | Wife | — | Russia |
| 14 | Elma Richter | 16 | Son | — | North Dakota |
| 15 | Elnora Richter | 13 | Daughter | — | North Dakota |
| 16 | Viola Richter | 10 | Daughter | — | North Dakota |
| 17 | Rudolph Tammen | 45 | Head | Farmer | Minnesota |
| 18 | Jesse Tammen | 34 | Wife | — | Denmark |
| 19 | Robert Tammen | 12 | Son | — | Nebraska |
| 20 | Dorothy Tammen | 10 | Daughter | — | North Dakota |
| 21 | Martha Tammen | 2 | Daughter | — | North Dakota |
| 22 | Gerald Tammen | 3 | Son | — | North Dakota |
| 23 | S. B. Clark | 63 | Head | Farmer | Minnesota |
| 24 | Lily May Clark | 58 | Wife | — | West Virginia |
| 25 | Glenn Clark | 23 | Son | Laborer | North Dakota |
| 26 | Roy Clark THIS PERSON | 26 | Son | Laborer | North Dakota |
| 27 | Mable Clark | 43 | Daughter | Housework | North Dakota |
| 28 | Raymond Clark | 19 | Son | Laborer | North Dakota |
| 29 | Rosy Clark | 16 | Daughter | — | North Dakota |
| 30 | Fred Weise | 49 | Head | Farmer | Germany |
| 31 | Martha Weise | 48 | Wife | — | Germany |
| 32 | Herta Weise | 20 | Daughter | — | Germany |
| 33 | Emil Goetz | 22 | Head | Farm | North Dakota |
| 34 | Elsie Goetz | 21 | Wife | — | Roumania |
| 35 | Henry Wiest | 43 | Head | Farmer | Russia |
| 36 | Matilda Wiest | 44 | Wife | — | Russia |
| 37 | John Schuh | 49 | Head | Truck Gard. | Russia |
| 38 | Martha Schuh | 42 | Wife | — | North Dakota |
| 39 | George Schuh | 20 | Son | Laborer | Montana |
| 40 | Julius Schuh | 18 | Son | Farmer | Montana |
Related Census Records
Pedigree Summary
Roy + 4 siblings
Gen 1 · 3 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)