WL
William Lyon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this William Lyon across the 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 9-person household.
Age 44
b. ~1896
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Lyon |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville city |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Department Manager |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 51 |
| Income (1939) | 2050 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Department Manager |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1896 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Mary Lyon | Spouse | — | 44 | ~1896 |
| Billy Lyon | Daughter | — | 9 | ~1931 |
| Leland Lyon | Son | — | 13 | ~1927 |
| Margaret Lyon | Daughter | — | 15 | ~1925 |
| William Lyon | Head | — | 44 | ~1896 |
| Anne Lyon | Daughter | — | 6 | ~1934 |
| Mary Lyon | Daughter | — | 11 | ~1929 |
| William Lyon | Son | — | 4 | ~1936 |
| Kathleen Lyon | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Jefferson, Kentucky
Head, age 34
Jefferson, Kentucky · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 19 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Foreman |
| Industry | Coffee Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Head, age 44
Jefferson-County, Kentucky · implied b. ~1896 — 9 household members
| Surname | Lyon |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville city |
| 1935 Residence (County) | Jefferson |
| Occupation | Department Manager |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 51 |
| Income (1939) | 2050 |
| 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 William Lyon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Lyon
Head · 1940 · age 44 · b. ~1896 · 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-t0627-01374-00689)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minnie Pierce | 41 | Daughter | — | Kentucky |
| 42 | Paul Pierce | 37 | Son | Packer | Kentucky |
| 43 | Earl C. Brown | 58 | Head | Electrician | Tennessee |
| 44 | Mae W. Brown | 57 | Wife | — | Kentucky |
| 45 | Mattie M. Willett | 50 | Mother-in-law | Principal | Kentucky |
| 46 | Stanley A. Mcpike | 24 | Head | Line Boy | Kentucky |
| 47 | Ruby Mcpike | 25 | Wife | Helper | Kentucky |
| 48 | Andrew Millett | 72 | Head | — | Kentucky |
| 49 | Catherine Millett | 71 | Wife | — | Kentucky |
| 50 | John J. Feeney | 63 | Head | — | Ohio |
| 51 | Annie C. Feeney | 55 | Wife | — | Kentucky |
| 52 | Loretta Feeney | 30 | Daughter | Telephone Operator | Kentucky |
| 53 | Mary Feeney | 23 | Daughter | — | Kentucky |
| 54 | James Feeney | 22 | Son | Press Operator | Kentucky |
| 55 | John L. Bailey | 18 | Grandson | Bartender | Kentucky |
| 56 | Robert B. Feeney | 15 | Grandson | — | Kentucky |
| 57 | John B. Feeney | 15 | Grandson | — | Kentucky |
| 58 | William P. Lyon THIS PERSON | 44 | Head | Department Manager | Kentucky |
| 59 | Mary D. Lyon | 44 | Wife | — | Kentucky |
| 60 | Margaret A. Lyon | 15 | Daughter | — | Kentucky |
| 61 | Leland L. Lyon | 13 | Son | — | Kentucky |
| 62 | Mary C. Lyon | 11 | Daughter | — | Kentucky |
| 63 | Billy Martha Lyon | 9 | Daughter | — | Kentucky |
| 64 | Kathleen V. Lyon | 7 | Daughter | — | Kentucky |
| 65 | Anne Marie Lyon | 6 | Daughter | — | Kentucky |
| 66 | William J. Lyon | 4 | Son | — | Kentucky |
| 67 | Milton V. Becker | 61 | Head | Locomotive Engineer | Kentucky |
| 68 | Birdie Becker | 54 | Wife | — | Kentucky |
| 69 | Harold J. Becker | 18 | Son | New Worker | Kentucky |
| 70 | Leslie M. Black | 45 | Lodger | Sheet Metal Worker | Kentucky |
| 71 | Susanne Black | 35 | Lodger | Typist | Indiana |
| 72 | Lawrence Gregory | 50 | Head | Metal Worker | Kentucky |
| 73 | Stella Gregory | 46 | Wife | — | Kentucky |
| 74 | Annie Greenwell | 54 | Head | — | Kentucky |
| 75 | Sarah J. Greenwell | 25 | Daughter | Clerk | Kentucky |
| 76 | Herman B. Greenwell | 36 | Son | Clerk | Kentucky |
| 77 | Evelyn Greenwell | 36 | In-law | Clerk | Kentucky |
| 78 | John J. O'Connor | 54 | Head | Investigator | Kentucky |
| 79 | Anna W. O'Connor | 45 | Wife | — | Kentucky |
| 80 | Joan O'Connor | 21 | Daughter | Inspector | 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)