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Mary French — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary French across the 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | French |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | H 1 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1925 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary French | Daughter | — | 15 | ~1925 |
| Lucille French | Daughter | — | 12 | ~1928 |
| Joseph French | Head | — | 44 | ~1896 |
| John French | Son | — | 6 | ~1934 |
| Joe French | Son | — | 14 | ~1926 |
| Charles French | Son | — | 9 | ~1931 |
| Viola French | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Jefferson, Kentucky
Daughter, age 5
Jefferson, Kentucky · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | French |
| Given Name | Mary L. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| 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 |
1940
Jefferson-County, Kentucky
Daughter, age 15
Jefferson-County, Kentucky · implied b. ~1925 — 7 household members
| Surname | French |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Highest Grade | H 1 |
| 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 Mary French across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary French
Daughter · 1940 · age 15 · b. ~1925 · Kentucky
★ You are viewing this record
Sibling
Charles French
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe French
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille French
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John French
Sibling · 1940 · age 6
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-t0627-01370-00648)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | R. Anglin | 23 | Daughter | — | Kentucky |
| 2 | Joseph C. French | 44 | Head | Carpenter | Kentucky |
| 3 | Viola French | 40 | Wife | — | Kentucky |
| 4 | Mary L. French THIS PERSON | 15 | Daughter | — | Kentucky |
| 5 | Joe French | 14 | Son | — | Kentucky |
| 6 | Lucille French | 12 | Daughter | — | Kentucky |
| 7 | Charles French | 9 | Son | — | Kentucky |
| 8 | John French | 6 | Son | — | Kentucky |
| 9 | James C. Moore | 56 | Head | Carpenter | Kentucky |
| 10 | Lottie Moore | 50 | Wife | — | Kentucky |
| 11 | Ernest Moore | 31 | Son | No Occupation | Kentucky |
| 12 | Maydee Moore | 29 | Daughter | — | Kentucky |
| 13 | Bernice Moore | 7 | Granddaughter | — | Kentucky |
| 14 | Ollie Hickerson | 77 | Head | — | Kentucky |
| 15 | William T. Hickerson | 40 | Son | Cabinet Maker | Kentucky |
| 16 | Frank Radenacher | 22 | Boarder | New Worker | Kentucky |
| 17 | Coraleen Mcclain | 3 | Guest | — | Kentucky |
| 18 | William Bach | 53 | Head | Janitor | Kentucky |
| 19 | Mable Bach | 38 | Wife | — | Kentucky |
| 20 | Clarence Bach | 19 | Son | New Worker | Kentucky |
| 21 | Mildred Bach | 18 | Daughter | New Worker | Kentucky |
| 22 | Terry Bach | 16 | Son | — | Kentucky |
| 23 | Margaret Bach | 12 | Daughter | — | Kentucky |
| 24 | Melva Bach | 6 | Daughter | — | Kentucky |
| 25 | Charles W. Munson | 40 | Head | Fireman | Kentucky |
| 26 | Mary L. Munson | 38 | Wife | — | Kentucky |
| 27 | Mable H. Munson | 18 | Daughter | — | Kentucky |
| 28 | Scott H. Mcclain | 40 | Head | Blacksmith | Kentucky |
| 29 | Catherine Mcclain | 32 | Wife | — | Ohio |
| 30 | James W. Duggins | 54 | Head | Carpenter | Kentucky |
| 31 | Agnes Duggins | 50 | Wife | — | Kentucky |
| 32 | James Jr. Duggins | 19 | Son | Laborer | Kentucky |
| 33 | Helen Duggins | 17 | Daughter | — | Kentucky |
| 34 | Delbert Duggins | 12 | Son | — | Kentucky |
| 35 | Ernest Y. Martin | 42 | Head | Clerk | Kentucky |
| 36 | Etta Martin | 40 | Wife | — | Kentucky |
| 37 | John A. Flaherty | 55 | Head | Relayed Man | Delayed Man | Pennsylvania |
| 38 | Ruth Hart Flaherty | 50 | Wife | — | Ohio |
| 39 | Marcella Flaherty | 27 | Daughter | Clerk | Illinois |
| 40 | Maxwell A. Schuler | 30 | Head | Druggist | 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)