RG
Robert Griffin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rockcastle-County, Kentucky
Our Model Tree links this Robert Griffin across the 1930 and 1940 US Censuses in Rockcastle-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rockcastle-County, Kentucky |
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mag. Dist. 1 |
| 1935 Residence (County) | Rockcastle |
| Additional Details | |
| Occupation | Mechanic Helper |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 365 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Mechanic Helper |
| Township / Ward | Mag Dist 1 |
| Est. Birth Year | ~1919 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Donald Griffin | Son | — | 27 | ~1913 |
| Hazel Griffin | Daughter | — | 17 | ~1923 |
| Eula Griffin | Daughter | — | 23 | ~1917 |
| Robert Griffin | Son | — | 21 | ~1919 |
| Mack Griffin | Son | — | 14 | ~1926 |
| Elizabeth Griffin | Daughter | — | 19 | ~1921 |
| Ford Griffin | Head | — | 53 | ~1887 |
| Martha Griffin | Daughter | — | 7 | ~1933 |
| Elizabeth Griffin | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Rockcastle, Kentucky
Son, age 11
Rockcastle, Kentucky · implied b. ~1919 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rockcastle-County, Kentucky
Son, age 21
Rockcastle-County, Kentucky · implied b. ~1919 — 9 household members
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mag. Dist. 1 |
| 1935 Residence (County) | Rockcastle |
| Occupation | Mechanic Helper |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 365 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Griffin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Griffin
Son · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Mack Griffin
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Griffin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Griffin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eula Griffin
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Griffin
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Griffin
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 — Rockcastle-County, Kentucky
Open full size
1940 US Federal Census — Rockcastle-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01353-00158)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mattie Clontz | 34 | Wife | — | Kentucky |
| 2 | Robert Clontz | 15 | Son | — | Kentucky |
| 3 | Jack Clontz | 13 | Son | — | Kentucky |
| 4 | Christine Clontz | 11 | Daughter | — | Kentucky |
| 5 | Vivian Lee Clontz | 9 | Daughter | — | Kentucky |
| 6 | Billy Joe Clontz | 7 | Son | — | Kentucky |
| 7 | Jimmy Clontz | 3 | Son | — | Kentucky |
| 8 | Ford Griffin | 53 | Head | Automobile Mechanic | Kentucky |
| 9 | Elizabeth Griffin | 53 | Wife | — | Kentucky |
| 10 | Donald Griffin | 27 | Son | Mechanic Helper | Kentucky |
| 11 | Eula Griffin | 23 | Daughter | Dishwasher | Kentucky |
| 12 | Robert Griffin THIS PERSON | 21 | Son | Mechanic Helper | Illinois |
| 13 | Elizabeth Griffin | 19 | Daughter | — | Indiana |
| 14 | Hazel Griffin | 17 | Daughter | — | Indiana |
| 15 | Mack (Buddy) Griffin | 14 | Son | — | Indiana |
| 16 | Martha Susan Griffin | 7 | Daughter | — | Kentucky |
| 17 | Green Carpenter | 55 | Head | Farmer | Kentucky |
| 18 | Martha Carpenter | 46 | Wife | — | Kentucky |
| 19 | Edgar Mullins | 52 | Head | None (Veteran) | Kentucky |
| 20 | Fannie Mullins | 33 | Wife | Teacher | Kentucky |
| 21 | Arthur Dailey | 54 | Head | Carpenter | Kentucky |
| 22 | Pearl Dailey | 44 | Wife | — | Kentucky |
| 23 | Raymond Dailey | 16 | Son | Carpenter Helper | Kentucky |
| 24 | Virginia Dailey | 15 | Daughter | — | Kentucky |
| 25 | Helen Rose Dailey | 10 | Daughter | — | Kentucky |
| 26 | Jack Dailey | 8 | Son | — | Kentucky |
| 27 | Betty Joe Dailey | 4 | Daughter | — | Kentucky |
| 28 | Mary Ann Dailey | 1 | Daughter | — | Kentucky |
| 29 | Oppie Bullock | 22 | Head | Ccc | Kentucky |
| 30 | Millie Swinney | 47 | Head | Oiler | Kentucky |
| 31 | Eunice Swinney | 41 | Wife | — | Kentucky |
| 32 | Joe Swinney | 17 | Son | Farmer | Kentucky |
| 33 | Rose E. Swinney | 15 | Daughter | — | Kentucky |
| 34 | Doris Mae Swinney | 12 | Daughter | — | Kentucky |
| 35 | Nell Woods Swinney | 9 | Daughter | — | Kentucky |
| 36 | Carma B. Swinney | 5 | Daughter | — | Kentucky |
| 37 | Hensie Swinney | 19 | Head | Laborer | Kentucky |
| 38 | Nancy Swinney | 18 | Wife | — | Kentucky |
| 39 | Sam Hasty | 36 | Head | — | Kentucky |
| 40 | Pearl Hasty | 28 | Wife | Stenographer | Kentucky |
Related Census Records
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)