JJ
John Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this John Jackson across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents John & Emma — first a son (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Jackson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | machinist helper |
| Industry | machine shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1360 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Machinist Helper |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Emma Jackson | Head | — | 53 | ~1887 |
| Ruby Hutchison | Other | — | 37 | ~1903 |
| John Jackson | Son | — | 32 | ~1908 |
Census Appearances
1920
Jefferson, Kentucky
Son, age 13
Jefferson, Kentucky · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Son, age 23
Jefferson, Kentucky · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | apprentice |
| Industry | Electrical |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Son, age 32
Jefferson-County, Kentucky · implied b. ~1908 — 3 household members
| Surname | Jackson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | machinist helper |
| Industry | machine shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1360 |
| Highest Grade | G 8 |
| 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 Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Jackson (~0.92 confidence) and mother Emma Jackson (~0.92 confidence) and mother Theresa Jackson (~0.92 confidence) and mother Emma Jackson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Jackson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Emma Jackson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Theresa Jackson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Emma Jackson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jackson
Son · 1940 · age 32 · b. ~1908 · Kentucky
★ 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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01368-00229)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert L. Wade | 11 | Son | — | Kentucky |
| 43 | Fred Betts | 40 | Head | Signalman | Kentucky |
| 44 | Eunice Betts | 37 | Wife | — | Kentucky |
| 45 | Madge Betts | 17 | Daughter | — | Kentucky |
| 46 | Louise Betts | 15 | Son | — | Kentucky |
| 47 | Jean Betts | 9 | Daughter | — | Kentucky |
| 48 | Thomas Banks | 45 | Head | Sheet Metal Worker | New York |
| 49 | Pearl Banks | 45 | Wife | Seamstress | Kentucky |
| 50 | Earl W. Parker | 29 | Head | Oiler | Kentucky |
| 51 | Mary Parker | 26 | Wife | — | Kentucky |
| 52 | Kenneth Parker | 5 | Son | — | Kentucky |
| 53 | Howard Arnold | 27 | Head | Laborer | Illinois |
| 54 | Marie Arnold | 28 | Wife | — | Kentucky |
| 55 | Patricia Arnold | 2 | Daughter | — | Kentucky |
| 56 | William Navers | 23 | Boarder | — | Kentucky |
| 57 | Walter Simson | 25 | Head | Laborer | Texas |
| 58 | Lucille Simson | 21 | Wife | — | Illinois |
| 59 | Margarette Simson | 2 | Daughter | — | Kentucky |
| 60 | Carl Gamball | 51 | Head | Pipe Layer | Kentucky |
| 61 | Louie Gamball | 48 | Wife | — | Kentucky |
| 62 | Thelma Gamball | 15 | Daughter | — | Kentucky |
| 63 | Alice Gamball | 9 | Daughter | — | Kentucky |
| 64 | Mary Gamball | 5 | Daughter | — | Kentucky |
| 65 | Marian Cannon | 34 | Head | Waitress | Indiana |
| 66 | Charles E. Cannon | 16 | Son | Shipping Clerk | Indiana |
| 67 | Charles F. Roberts | 57 | Head | Maintenance Man | Kentucky |
| 68 | Annie B. Roberts | 59 | Wife | — | Kentucky |
| 69 | John T. Hendricks | 70 | Head | Machinist | Indiana |
| 70 | Mina Hendricks | 69 | Wife | — | Indiana |
| 71 | Emma Jackson | 53 | Head | — | Kentucky |
| 72 | John Jackson THIS PERSON | 32 | Son | Machinist Helper | Kentucky |
| 73 | Ruby Hutchison | 37 | Lodger | Cook | Kentucky |
| 74 | Martin H. Smith | 67 | Head | Watchman | Kentucky |
| 75 | Lucy Smith | 62 | Wife | — | Kentucky |
| 76 | T. H. Kirk | 42 | Head | Barber | Tennessee |
| 77 | Addie Kirk | 42 | Wife | — | Tennessee |
| 78 | Harry Block | 27 | Son-in-law | Truck Driver | Tennessee |
| 79 | Amalie Block | 22 | Daughter | — | Tennessee |
| 80 | Linda L. Block | 1 | Granddaughter | — | Kentucky |
Pedigree Summary
John
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)