JG
John Gardner — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this John Gardner 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 7-person household.
Age 21
b. ~1919
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Gardner |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial District 3 |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Attendant |
| Industry | Filling Station |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 416 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Attendant |
| Township / Ward | Magisterial District 3 |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Gardner | Daughter | — | 12 | ~1928 |
| John Gardner | Head | — | 56 | ~1884 |
| John Gardner | Son | — | 21 | ~1919 |
| Arthur Gardner | Son | — | 19 | ~1921 |
| Irvin Gardner | Son | — | 16 | ~1924 |
| Leroy Gardner | Son | — | 9 | ~1931 |
| Anna Gardner | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Jefferson, Kentucky
Son, age 1
Jefferson, Kentucky · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Son, age 11
Jefferson, Kentucky · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | John |
| 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 — 7 household members
| Surname | Gardner |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial District 3 |
| 1935 Residence (County) | Jefferson |
| Occupation | Attendant |
| Industry | Filling Station |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 416 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Gardner across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Gardner (~0.92 confidence) and father John Gardner (~0.92 confidence) and mother Anna Gardner (~0.92 confidence) and mother Verna Gardner (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Gardner
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Gardner
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Anna Gardner
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Verna Gardner
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Gardner
Son · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Helen Gardner
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Gardner
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irvin Gardner
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leroy Gardner
Sibling · 1940 · age 9
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-t0627-01321-00578)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred Colyer | 12 | Daughter | — | Kentucky |
| 2 | Thomas Colyer | 8 | Son | — | Kentucky |
| 3 | Fred D. Fenwick | 61 | Head | — | Kentucky |
| 4 | Callie Fenwick | 50 | Wife | Housekeeper | Kentucky |
| 5 | Bessie Fenwick | 16 | Daughter | — | Kentucky |
| 6 | Elizabeth Fenwick | 14 | Daughter | — | Kentucky |
| 7 | Fred Fenwick | 10 | Son | — | Kentucky |
| 8 | Thomas Watson | 52 | Head | Attendant | Kentucky |
| 9 | Mary Watson | 47 | Wife | — | Kentucky |
| 10 | Margaret Watson | 22 | Daughter | Packer | Kentucky |
| 11 | Thomas Watson | 21 | Son | Assembler | Kentucky |
| 12 | Mary Watson | 16 | Daughter | — | Kentucky |
| 13 | Melvin Watson | 14 | Son | — | Kentucky |
| 14 | Dorothy Watson | 13 | Daughter | — | Kentucky |
| 15 | James Watson | 10 | Son | — | Kentucky |
| 16 | Donald Watson | 8 | Son | — | Kentucky |
| 17 | Mary Watson | 7 | Daughter | — | Kentucky |
| 18 | Charlie Watson | 5 | Son | — | Kentucky |
| 19 | Guy Carter | 25 | Head | Proprietor | Kentucky |
| 20 | Margaret Carter | 21 | Wife | Bookkeeper | Indiana |
| 21 | Mary Acker | 78 | Head | — | Kentucky |
| 22 | Cecil Payton | 30 | Head | Welder | Kentucky |
| 23 | Luava Payton | 23 | Wife | — | Kentucky |
| 24 | Frank Vormbrock | 65 | Head | — | Kentucky |
| 25 | Kate Vormbrock | 66 | Wife | — | Kentucky |
| 26 | Andrew Vormbrock | 42 | Son | Caretaker | Kentucky |
| 27 | Margaret Allgood | 46 | Head | — | Kentucky |
| 28 | Carl Allgood | 25 | Son | Color Maker | Kentucky |
| 29 | Elizabeth Allgood | 22 | Daughter | Stenographer | Kentucky |
| 30 | Raymond Allgood | 17 | Son | — | Kentucky |
| 31 | Mildred Allgood | 15 | Daughter | — | Kentucky |
| 32 | Dorothy Allgood | 12 | Daughter | — | Kentucky |
| 33 | Doris Allgood | 12 | Daughter | — | Kentucky |
| 34 | John Gardner | 56 | Head | Switchman | Kentucky |
| 35 | Anna Gardner | 52 | Wife | — | Kentucky |
| 36 | John Gardner THIS PERSON | 21 | Son | Attendant | Kentucky |
| 37 | Arthur Gardner | 19 | Son | Attendant | Kentucky |
| 38 | Irvin Gardner | 16 | Son | — | Kentucky |
| 39 | Helen Gardner | 12 | Daughter | — | Kentucky |
| 40 | Leroy Gardner | 9 | Son | — | Kentucky |
Pedigree Summary
John + 4 siblings
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)