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John Lucas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kenton-County, Kentucky
Our Model Tree links this John Lucas across the 1930 and 1940 US Censuses in Kenton-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kenton-County, Kentucky |
| Surname | Lucas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Covington |
| 1935 Residence (County) | Kenton |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Covington City |
| Est. Birth Year | ~1928 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Ruth Lucas | Daughter | — | 11 | ~1929 |
| Dorothy Lucas | Daughter | — | 15 | ~1925 |
| Frank Lucas | Head | — | 55 | ~1885 |
| Lawrence Lucas | Son | — | 29 | ~1911 |
| Paul Lucas | Son | — | 20 | ~1920 |
| Frank Lucas | Son | — | 22 | ~1918 |
| Maurice Lucas | Son | — | 18 | ~1922 |
| John Lucas | Son | — | 12 | ~1928 |
| Minnie Lucas | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Kenton, Kentucky
Son, age 2
Kenton, Kentucky · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Kenton-County, Kentucky
Son, age 12
Kenton-County, Kentucky · implied b. ~1928 — 9 household members
| Surname | Lucas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Covington |
| 1935 Residence (County) | Kenton |
| Highest Grade | No 3 |
| 1935 Residence | Kentucky |
| 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 Lucas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lucas
Son · 1940 · age 12 · b. ~1928 · Kentucky
★ You are viewing this record
Sibling
Lawrence Lucas
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Lucas
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Lucas
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Lucas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maurice Lucas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lucas
Sibling · 1940 · age 11
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 — Kenton-County, Kentucky
Open full size
1940 US Federal Census — Kenton-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01323-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur Ryan | 21 | Head | Laborer | Kentucky |
| 42 | Mary Ryan | 20 | Wife | — | Canada |
| 43 | Donna Lu Ryan | 3 | Daughter | — | Kentucky |
| 44 | Joan Ann Ryan | 1 | Daughter | — | Kentucky |
| 45 | Mary Jane Ryan | 0 | Daughter | — | Kentucky |
| 46 | Frank Lucas | 55 | Head | — | Kentucky |
| 47 | Minnie Lucas | 52 | Wife | — | Kentucky |
| 48 | Lawrence Lucas | 29 | Son | Laborer | Kentucky |
| 49 | Frank Jr. Lucas | 22 | Son | Laborer | Kentucky |
| 50 | Paul Lucas | 20 | Son | Laborer | Kentucky |
| 51 | Maurice Lucas | 18 | Son | — | Kentucky |
| 52 | Dorothy Lucas | 15 | Daughter | — | Kentucky |
| 53 | John Lucas THIS PERSON | 12 | Son | — | Kentucky |
| 54 | Ruth Lucas | 11 | Daughter | — | Kentucky |
| 55 | Frances Moore | 45 | Head | Laborer | Kentucky |
| 56 | Robert Ferguson | 28 | Head | Artist | Kentucky |
| 57 | Mabel Ferguson | 21 | Wife | — | Kentucky |
| 58 | Darrell Ferguson | 4 | Son | — | Kentucky |
| 59 | Hayes Trafford | 37 | Head | Laborer | Kentucky |
| 60 | Martha Trafford | 34 | Wife | Laundress | Kentucky |
| 61 | Will Smith | 38 | Head | Laborer | Kentucky |
| 62 | Margaret Smith | 28 | Wife | — | Kentucky |
| 63 | Mary Lou Smith | 11 | Daughter | — | Kentucky |
| 64 | Sarah Gilham | 77 | Head | — | Kentucky |
| 65 | Audrey Archill | 27 | Head | Laundress | Kentucky |
| 66 | Daley Lawrence Archill | 9 | Son | — | Ohio |
| 67 | Daley Jr. Edw. Archill | 7 | Son | — | Kentucky |
| 68 | Otto Germann | 70 | Head | Owner | Germany |
| 69 | Bertha Germann | 66 | Wife | — | Ohio |
| 70 | John Coppage | 24 | Head | App. Car Rep. | Ohio |
| 71 | Margaret Coppage | 23 | Wife | — | Kentucky |
| 72 | James Coppage | 5 | Son | — | Kentucky |
| 73 | Sidney Snyder | 30 | Head | Driver | Virginia |
| 74 | Clarice Snyder | 28 | Wife | — | Kentucky |
| 75 | William Kleibacker | 75 | Head | Caretaker | Ohio |
| 76 | Frances Kleibacker | None | Sister | — | Kentucky |
| 77 | Catherine Ratterman | 62 | Head | Seamstress | Kentucky |
| 78 | Mary Gough | 48 | Sister | — | Kentucky |
| 79 | Mary Louise Gough | 18 | Niece | — | Kentucky |
| 80 | Edward John | 17 | Nephew | Clerk | Kentucky |
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)