RH
Robert Hopkins — 1940 US Census Record
Model Tree available1940 United States Federal Census · Grant-County, Oklahoma
Our Model Tree links this Robert Hopkins across the 1920, 1930 and 1940 US Censuses in Grant-County, Oklahoma (XGBoost, ~Confirmed), with identified parents Alexander — first a head (b.~1890), then head of a 6-person household.
Age 50
b. ~1890
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, Oklahoma |
| Surname | Hopkins |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Grant |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | E |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | No 2-10 |
| 1935 Residence | Oklahoma |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Farmer |
| Township / Ward | Manchester |
| Est. Birth Year | ~1890 |
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 |
|---|---|---|---|---|
| James Hopkins | Son | — | 10 | ~1930 |
| Joe Hopkins | Son | — | 6 | ~1934 |
| Robert Hopkins | Head | — | 50 | ~1890 |
| Stanley Hopkins | Son | — | 3 | ~1937 |
| Robert Hopkins | Son | — | 8 | ~1932 |
| Katherine Hopkins | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Grant, Oklahoma
Son, age 30
Grant, Oklahoma · implied b. ~1890 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hopkins |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Grant, Oklahoma
Head, age 40
Grant, Oklahoma · implied b. ~1890 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hopkins |
| Given Name | Robert A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 33 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | Wheat Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Grant-County, Oklahoma
Head, age 50
Grant-County, Oklahoma · implied b. ~1890 — 6 household members
| Surname | Hopkins |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Grant |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | E |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | No 2-10 |
| 1935 Residence | Oklahoma |
| 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 Hopkins across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alexander Hopkins (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alexander Hopkins
b. ~1855
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Hopkins
Head · 1940 · age 50 · b. ~1890 · Oklahoma
★ 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 — Grant-County, Oklahoma
Open full size
1940 US Federal Census — Grant-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03296-00222)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Judith Lee Clough | 1 | Daughter | — | Kansas |
| 2 | Guy Mccray | 51 | Head | Farmer | Kansas |
| 3 | Jennie Mccray | 48 | Wife | — | Kansas |
| 4 | Burns Mccray | 23 | Son | Farmer | Oklahoma |
| 5 | Nora Hardesty | 59 | Head | — | Indiana |
| 6 | Eugene Boyle | 34 | Head | Farmer | Oklahoma |
| 7 | Viola Boyle | 27 | Wife | — | Oklahoma |
| 8 | Leonard Boyle | 7 | Son | — | Kansas |
| 9 | Leon Boyle | 1 | Son | — | Kansas |
| 10 | Dennis Lawrence | 43 | Head | Farmer | Oklahoma |
| 11 | Alice Lawrence | 43 | Wife | — | Oklahoma |
| 12 | R. D. Jr. Lawrence | 17 | Son | — | Oklahoma |
| 13 | Burke Lawrence | 15 | Son | — | Oklahoma |
| 14 | Phyllis Lawrence | 11 | Daughter | — | Oklahoma |
| 15 | William Cavin | 62 | Head | Farmer | Iowa |
| 16 | Zelma Cavin | 55 | Wife | — | Kansas |
| 17 | Clayton Cavin | 33 | Son | Farmer | Kansas |
| 18 | Nina Cavin | 26 | Daughter | — | Oklahoma |
| 19 | Wilma Cavin | 15 | Daughter | — | Oklahoma |
| 20 | Mary Beaucamp | 88 | Mother | — | Illinois |
| 21 | David Jones | 35 | Head | Owner | Oklahoma |
| 22 | Lena Jones | 33 | Wife | — | Oklahoma |
| 23 | Donna Jones | 1 | Daughter | — | Kansas |
| 24 | Lewis Clark | 41 | Head | Farmer | Kentucky |
| 25 | Eva A. Clark | 36 | Wife | — | Kansas |
| 26 | Elaine Clark | 17 | Daughter | — | Kansas |
| 27 | Robert Clark | 15 | Son | — | Oklahoma |
| 28 | Neil Clark | 11 | Son | — | Oklahoma |
| 29 | Robert Hopkins THIS PERSON | 50 | Head | Farmer | Ohio |
| 30 | Katherine Hopkins | 32 | Wife | — | Kansas |
| 31 | James Hopkins | 10 | Son | — | Kansas |
| 32 | Robert L. Hopkins | 8 | Son | — | Kansas |
| 33 | Joe Ed Hopkins | 6 | Son | — | Kansas |
| 34 | Stanley Hopkins | 3 | Son | — | Kansas |
| 35 | Joseph Demuth | 68 | Head | Farmer | Iowa |
| 36 | Vic O. Demuth | 59 | Wife | — | Kansas |
| 37 | Herman Demuth | 36 | Son | Farm Laborer | Kansas |
| 38 | Elton Loop | 46 | Head | Farmer | Kansas |
| 39 | Nettie A. Loop | 46 | Wife | — | Iowa |
| 40 | Robert Loop | 18 | Son | — | Oklahoma |
Pedigree Summary
Robert
Gen 1 · 1 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)