MH
Mary Horn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary Horn across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents Ernest & Anna — first a daughter (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Horn |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| Additional Details | |
| Highest Grade | C 2 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1916 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Nuna Horn | Spouse | — | 47 | ~1893 |
| William Menges | Other | — | 24 | ~1916 |
| Mary Horn | Daughter | — | 24 | ~1916 |
| Ernest Horn | Head | — | 52 | ~1888 |
Census Appearances
1920
Jefferson, Kentucky
Daughter, age 4
Jefferson, Kentucky · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Horn |
| Given Name | Mary G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| 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
Daughter, age 14
Jefferson, Kentucky · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Horn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| 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
Daughter, age 24
Jefferson-County, Kentucky · implied b. ~1916 — 4 household members
| Surname | Horn |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| Highest Grade | C 2 |
| 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 Horn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ernest Horn (~0.92 confidence) and mother Anna Horn (~0.92 confidence) and mother Nuna Horn (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ernest Horn
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Anna Horn
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Nuna Horn
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Horn
Daughter · 1940 · age 24 · b. ~1916 · 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
40 people indexed on this census page (nara:1940:m-t0627-01376-00319)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth Kidd | 56 | wife | — | Pennsylvania |
| 42 | Mary Kidd | 27 | daughter | Nurse | Pennsylvania |
| 43 | Adam Ullrich | 52 | Head | Clerk | Kentucky |
| 44 | Mary Ullrich | 51 | wife | — | Kentucky |
| 45 | Anna Kleier | 80 | mother-in-law | — | Kentucky |
| 46 | Rose Enright | 48 | sister-in-law | — | Kentucky |
| 47 | Blanche Barnes | 37 | Head | Saleslady | Kentucky |
| 48 | Bonnie Barnes | 13 | daughter | — | Kentucky |
| 49 | Stanley Osburn | 34 | Head | Civil Engineer | Kentucky |
| 50 | Hertha Osburn | 31 | wife | — | Kentucky |
| 51 | Joyce Ann Osburn | 5 | daughter | — | Kentucky |
| 52 | Robert H. Clappe | 29 | Head | Office Supervisor | North Carolina |
| 53 | Margaret Clappe | 28 | wife | — | North Carolina |
| 54 | Robert W. Clappe | 7 | son | — | North Carolina |
| 55 | Mayme Webster | 61 | mother-in-law | — | South Carolina |
| 56 | Earl Donan | 40 | Head | Insurance Agent | Kentucky |
| 57 | Flossie Donan | 34 | wife | Machine Operator | Kentucky |
| 58 | Dorothy Donan | 19 | daughter | — | Kentucky |
| 59 | Eula Donan | 68 | mother | — | Kentucky |
| 60 | Allen Kast | 50 | Head | Assistant Buying Agt | Kentucky |
| 61 | Virginia Kast | 38 | wife | — | Kentucky |
| 62 | Bette Kast | 4 | daughter | — | Kentucky |
| 63 | Albert D. Kaelin | 31 | Head | Advertising Manager | Kentucky |
| 64 | Mary L. Kaelin | 29 | wife | — | Kentucky |
| 65 | Doris Jean Kaelin | 7 | daughter | — | Kentucky |
| 66 | Edward L. Kaelin | 5 | son | — | Kentucky |
| 67 | Ernest Horn | 52 | Head | Retired Foreman | Kentucky |
| 68 | Nuna Horn | 47 | wife | — | Kentucky |
| 69 | Mary Horn THIS PERSON | 24 | daughter | — | Kentucky |
| 70 | William Menges | 24 | nephew | Milk Salesman | Kentucky |
| 71 | James H. Kennedy | 58 | Head | Postal Clerk | Kentucky |
| 72 | Jessie B. Kennedy | 58 | wife | — | Kansas |
| 73 | James H. Kennedy | 24 | son | Asst Accountant | Indiana |
| 74 | Alvin Goldsmith | 62 | Head | Bar Tender | Kentucky |
| 75 | Clara Goldsmith | 58 | wife | — | Kentucky |
| 76 | Henry Cheney | 46 | Head | Credit Clerk | Kentucky |
| 77 | Ethel Cheney | 42 | wife | — | Kentucky |
| 78 | Carroll Cheney | 25 | son | Shipping Clerk | Kentucky |
| 79 | Nadine Cheney | 21 | daughter | Bookkeeper | Kentucky |
| 80 | Stewart S. Durrett | 37 | Head | Operator | Kentucky |
Pedigree Summary
Mary
Gen 1 · 3 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)