MW
Mary Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary Wolf across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents Florence & James — first a daughter (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Wolf |
| Given Name | Mary Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Clerk |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Helen Wolf | Daughter | — | 23 | ~1917 |
| Mary Wolf | Daughter | — | 21 | ~1919 |
| Edward Wolf | Head | — | 46 | ~1894 |
| Henry Siebold | Other | — | 46 | ~1894 |
| Edward Wolf | Son | — | 13 | ~1927 |
| John Wolf | Son | — | 10 | ~1930 |
| Florence Wolf | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Jefferson, Kentucky
Other, age
Jefferson, Kentucky · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Mary |
| Relationship to Head | Grand-daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Daughter, age 11
Jefferson, Kentucky · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Mary G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| 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 21
Jefferson-County, Kentucky · implied b. ~1919 — 7 household members
| Surname | Wolf |
| Given Name | Mary Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| 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 Mary Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Florence Wolf (~0.92 confidence) and father James Wolf (~0.92 confidence) and father Edward Wolf (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Florence Wolf
b. ~1892
Source mother
● Household
· direct · ~0.92
Father
James Wolf
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Edward Wolf
b. ~1894
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Wolf
Daughter · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Helen Wolf
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Wolf
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Wolf
Sibling · 1940 · age 10
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-t0627-01376-00112)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph G. Hattemer | 32 | Son | Cooper | Kentucky |
| 2 | Angela M. Hattemer | 25 | Daughter | Packer | Kentucky |
| 3 | Judith Ann Hattemer | 4 | Daughter | — | Kentucky |
| 4 | Richard L. Berry | 47 | Head | Foreman | Kentucky |
| 5 | Mary R. Berry | 42 | Wife | — | Kentucky |
| 6 | Richard Lincoln Berry | 20 | Son | Clerk | Kentucky |
| 7 | Francis M. Berry | 18 | Son | Press Boy | Kentucky |
| 8 | Mary Martha Berry | 11 | Daughter | — | Kentucky |
| 9 | Emil Hermesdorfer | 72 | Head | — | France |
| 10 | Annie Hermesdorfer | 67 | Sister | — | France |
| 11 | Mary Hermesdorfer | 65 | Sister | — | France |
| 12 | Charles R. Wilson | 44 | Head | Advertiser | Kentucky |
| 13 | Edna Wilson | 37 | Wife | — | Indiana |
| 14 | Charlotte Lee Wilson | 11 | Daughter | — | Kentucky |
| 15 | Anna Burke | 36 | Sister-in-law | Inspector | Indiana |
| 16 | Benjamin Gardner | 61 | Head | Locomotive Engineer | Kentucky |
| 17 | Lucy Gardner | 61 | Wife | — | Kentucky |
| 18 | Charles W. Sleeter | 65 | Head | Locomotive Engineer | Iowa |
| 19 | Ethel A. Sleeter | 58 | Wife | — | Ohio |
| 20 | Charles R. Sleeter | 29 | Son | Foreman | Kentucky |
| 21 | Alford Jensen | 55 | Head | Conductor | Kentucky |
| 22 | Lillie Jensen | 56 | Wife | — | Kentucky |
| 23 | Edward J. Wolf | 46 | Head | Yard Clerk | Kentucky |
| 24 | Florence Wolf | 48 | Wife | — | Kentucky |
| 25 | Helen G. Wolf | 23 | Daughter | — | Kentucky |
| 26 | Mary Catherine Wolf THIS PERSON | 21 | Daughter | Clerk | Kentucky |
| 27 | John William Wolf | 10 | Son | — | Kentucky |
| 28 | Edward, Jr. Wolf | 13 | Son | — | Kentucky |
| 29 | Henry Siebold | 46 | Son-in-law | Loader | Kentucky |
| 30 | Thomas F. Mantell | 50 | Head | Commercial Salesman | Kentucky |
| 31 | Colette Mantell | 42 | Wife | — | Pennsylvania |
| 32 | Thomas Francis, Jr. Mantell | 17 | Son | — | Kentucky |
| 33 | Mary Elizabeth Mantell | 15 | Daughter | — | Indiana |
| 34 | Dorothy Jane Mantell | 9 | Daughter | — | Kentucky |
| 35 | Frank Napier | 37 | Head | Clerk | Kentucky |
| 36 | Margaret Napier | 31 | Wife | Shopper | Kentucky |
| 37 | Louis Matera | 38 | Head | Barber | Italy |
| 38 | Bertie B. Matera | 41 | Wife | — | Kentucky |
| 39 | Evan Ecker | 48 | Head | Motorman | Kentucky |
| 40 | Lillian Ecker | 46 | Wife | — | Kentucky |
Pedigree Summary
Mary + 3 siblings
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)