JG
John Griffin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this John Griffin across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Griffin |
| Given Name | John Allen |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Commercial Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 960 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Bookkeeper |
| Township / Ward | Louisville City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Amadine Griffin | Daughter | — | 15 | ~1925 |
| John Griffin | Head | — | 57 | ~1883 |
| John Griffin | Son | — | 21 | ~1919 |
| Amadine Griffin | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Jefferson, Kentucky
Son, age 1
Jefferson, Kentucky · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Son, age 11
Jefferson, Kentucky · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Son, age 21
Jefferson-County, Kentucky · implied b. ~1919 — 4 household members
| Surname | Griffin |
| Given Name | John Allen |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | Bookkeeper |
| Industry | Commercial Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 960 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 John Griffin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Griffin (~0.92 confidence) and father John Griffin (~0.92 confidence) and mother Madine Griffin (~0.92 confidence) and mother Amadine Griffin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Griffin
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Griffin
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Madine Griffin
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Amadine Griffin
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Griffin
Son · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Amadine Griffin
Sibling · 1940 · age 15
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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01365-00570)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kenneth G. Hall | 37 | Head | Minister | Illinois |
| 42 | Naomi Hall | 39 | Wife | Teacher | Illinois |
| 43 | Nellie Mae Williams | 51 | Head | Clerk | Louisiana |
| 44 | Margaret Tobin | 74 | Head | — | Kentucky |
| 45 | Catherine Tobin | 37 | Daughter | Visiting Teacher | Kentucky |
| 46 | J. Roy Springgate | 39 | Head | Foreman | Kentucky |
| 47 | Eleanor Springgate | 36 | Wife | — | Kentucky |
| 48 | Lois Springgate | 16 | Daughter | — | Kentucky |
| 49 | Alice Springgate | 15 | Daughter | — | Kentucky |
| 50 | Ann Springgate | 8 | Daughter | — | Kentucky |
| 51 | Emily Reid | 40 | Sister-in-law | Cashier | Kentucky |
| 52 | Ella Smith | 53 | Aunt by Marriage | — | Kentucky |
| 53 | Albert J. Heilman | 38 | Head | Chemist | Kentucky |
| 54 | Dorothy Heilman | 28 | Wife | — | Kentucky |
| 55 | Martha Heilman | 3 | Daughter | — | Kentucky |
| 56 | John K. Griffin | 57 | Head | Dentist | Kentucky |
| 57 | Amadine Griffin | 52 | Wife | — | Kentucky |
| 58 | John Allen Griffin THIS PERSON | 21 | Son | Bookkeeper | Kentucky |
| 59 | Amadine Griffin | 15 | Daughter | — | Kentucky |
| 60 | Albert M. Peterson | 43 | Head | Truck Driver | Kentucky |
| 61 | Effie Peterson | 35 | Wife | — | Tennessee |
| 62 | Sue Peterson | 7 | Daughter | — | Kentucky |
| 63 | Albert M. Jr. Peterson | 3 | Son | — | Kentucky |
| 64 | Edgar H. Major | 49 | Head | Superintendent Of Car Service | Kentucky |
| 65 | Elizabeth C. Major | 45 | Wife | — | Kentucky |
| 66 | William C. Major | 25 | Son | Electrical Engineer | Alabama |
| 67 | Joseph J. Eisnebeis | 49 | Head | Bond Teller | Kentucky |
| 68 | Josephine K. Eisnebeis | 49 | Wife | — | Kentucky |
| 69 | Grace E. Eisnebeis | 22 | Daughter | Teacher | Kentucky |
| 70 | Dorothy B. Eisnebeis | 18 | Daughter | — | Kentucky |
| 71 | Louis H. Sauer | 51 | Head | Salesman | Kentucky |
| 72 | Martha Sauer | 42 | Wife | — | Kentucky |
| 73 | Rose King | 74 | Head | — | Kentucky |
| 74 | Clifford Heim | 39 | Son-in-law | Layout Man | Kentucky |
| 75 | Thelma Heim | 34 | Daughter | — | Kentucky |
| 76 | Doris Lee Heim | 9 | Granddaughter | — | Kentucky |
| 77 | William A. Thad | 44 | Head | Proprietor | Kentucky |
| 78 | Rose Lee Thad | 39 | Wife | — | Kentucky |
| 79 | William A. Jr. Thad | 20 | Son | Filling Station Attendant | Kentucky |
| 80 | Rose Mary Thad | 5 | Daughter | — | Kentucky |
Pedigree Summary
John + 1 sibling
Gen 1 · 4 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)