TL
Thomas Leonard — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Thomas Leonard across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Thomas & Walter — first a son (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Usher |
| Industry | Theatre |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Usher |
| Township / Ward | Philadelphia |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Leonard | Son | — | 24 | ~1916 |
| Catherine Leonard | Head | — | 42 | ~1898 |
| Catherine Leonard | Daughter | — | 23 | ~1917 |
Census Appearances
1920
Delaware, Pennsylvania
Son, age 3
Delaware, Pennsylvania · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 14
Philadelphia, Pennsylvania · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 24
Philadelphia-County, Pennsylvania · implied b. ~1916 — 3 household members
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Usher |
| Industry | Theatre |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Thomas Leonard across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Thomas Leonard (~0.92 confidence) and father Walter Leonard (~0.92 confidence) and mother Catherine Leonard (~0.92 confidence) and mother Emma Leonard (~0.92 confidence) and mother Emma Leonard (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Leonard
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Walter Leonard
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Catherine Leonard
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Emma Leonard
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Emma Leonard
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Leonard
Son · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Catherine Leonard
Sibling · 1940 · age 23
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03754-00131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Fox | 20 | daughter | Stenographer | Pennsylvania |
| 2 | Mary Fox | 3 | daughter | — | Pennsylvania |
| 3 | James Mccarren | 41 | Head | Clerk | Pennsylvania |
| 4 | Magdaline Mccarren | 39 | Wife | — | Pennsylvania |
| 5 | Mary Mccarren | 11 | daughter | — | Pennsylvania |
| 6 | Caroline Schumann | 80 | Lodger | — | Germany |
| 7 | Catherine Leonard | 42 | Head | Waitress | Pennsylvania |
| 8 | Thomas Leonard THIS PERSON | 24 | son | Usher | Pennsylvania |
| 9 | Catherine Leonard | 23 | daughter | Cashier | Pennsylvania |
| 10 | John Coonahan | 60 | Head | Salesman | Pennsylvania |
| 11 | Edward Coonahan | 20 | son | Clerk | Pennsylvania |
| 12 | John Jr. Coonahan | 31 | son | Operator | Pennsylvania |
| 13 | Frances Ruth Coonahan | 27 | daughter-in-law | — | Pennsylvania |
| 14 | Marie Coonahan | 25 | daughter | — | Pennsylvania |
| 15 | John 3Rd Coonahan | 1 | grandson | — | Pennsylvania |
| 16 | George Sluther | 20 | Lodger | Clerk | Germany |
| 17 | Harold Englemyer | 50 | Head | Deputy Sheriff | Pennsylvania |
| 18 | Freda Englemyer | 44 | Wife | — | Pennsylvania |
| 19 | Irvine Englemyer | 19 | daughter | New Worker | Pennsylvania |
| 20 | Fredericka Schmidt | 77 | mother-in-law | — | Germany |
| 21 | George Fenstermacher | 0 | Lodger | — | Pennsylvania |
| 22 | Samuel Canning | 46 | Head | Roofer | Pennsylvania |
| 23 | Catherine Canning | 44 | wife | Presser | Irish Free State |
| 24 | Frank Levine | 55 | Head | Gardener | Ireland |
| 25 | Catherine Levine | 44 | wife | — | Ireland |
| 26 | Frank Levine | 20 | son | New Worker | Pennsylvania |
| 27 | Anna Levine | 18 | daughter | — | Pennsylvania |
| 28 | Joseph Donnelly | 45 | Head | Gardener | Northern Ireland |
| 29 | Mary Donnelly | 30 | wife | — | Ireland |
| 30 | Mary Alice Donnelly | 3 | daughter | — | Pennsylvania |
| 31 | Joseph Patrick Donnelly | 1 | son | — | Pennsylvania |
| 32 | Kathleen Donnelly | 0 | daughter | — | Pennsylvania |
| 33 | Mary Pierce | 51 | Head | Hairdresser | Pennsylvania |
| 34 | Isaac Shelly | 63 | Head | Baker | Germany |
| 35 | Bertha Shelly | 58 | wife | — | Germany |
| 36 | Jacob Shelly | 59 | Brother | — | Germany |
| 37 | August Steinhilber | 32 | Lodger | Machinist | Germany |
| 38 | Clarence Nolliein | 38 | Head | Electrician | Pennsylvania |
| 39 | Kathryn Nolliein | 36 | wife | — | Pennsylvania |
| 40 | Albert Nolliein | 16 | son | — | Pennsylvania |
Pedigree Summary
Thomas + 1 sibling
Gen 1 · 5 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)