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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 Charles & Charles — first a son (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Leonard |
| Given Name | Thomas S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | PHILADELPHIA |
| Additional Details | |
| Occupation | Pressman |
| Industry | Publishing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1280 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Pressman |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1912 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Helen Leonard | Daughter | — | 30 | ~1910 |
| Loretta Leonard | Daughter | — | 27 | ~1913 |
| Thomas Leonard | Son | — | 28 | ~1912 |
| John Leonard | Son | — | 25 | ~1915 |
| John Leonard | Head | — | 61 | ~1879 |
| Alice Leonard | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 8
Philadelphia, Pennsylvania · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 18
Philadelphia, Pennsylvania · implied b. ~1912 — 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 | 18 |
| 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 28
Philadelphia-County, Pennsylvania · implied b. ~1912 — 6 household members
| Surname | Leonard |
| Given Name | Thomas S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | PHILADELPHIA |
| Occupation | Pressman |
| Industry | Publishing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1280 |
| 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 2 locations, using XGBoost record linkage. Identified parents: father Charles Leonard (~0.92 confidence) and father Charles Leonard (~0.92 confidence) and father John Leonard (~0.92 confidence) and mother Alice Leonard (~0.92 confidence) and mother Carrie Leonard (~0.92 confidence) and mother Sophie Leonard (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Leonard
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Charles Leonard
b. ~1881
Source father
● Household
· direct · ~0.92
Father
John Leonard
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Alice Leonard
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Carrie Leonard
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Sophie Leonard
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Leonard
Son · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
John Leonard
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Leonard
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Leonard
Sibling · 1940 · age 30
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-t0627-03749-00472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter S. Hunt | 58 | Head | Signature-Clerk | Pennsylvania |
| 2 | Gertrude C. Hunt | 57 | Wife | — | Pennsylvania |
| 3 | John F Leonard | 61 | Head | Machine-Repair | Pennsylvania |
| 4 | Alice Leonard | 60 | Wife | — | Pennsylvania |
| 5 | Helen M. Leonard | 30 | Daughter | Subscription Clerk | Pennsylvania |
| 6 | Thomas S. Leonard THIS PERSON | 28 | Son | Pressman | Pennsylvania |
| 7 | Loretta A. Leonard | 27 | Daughter | Stenographer | Pennsylvania |
| 8 | John F. Jr. Leonard | 25 | Son | Filing Clerk | Pennsylvania |
| 9 | Sarah Allen | 55 | Head | — | Ireland |
| 10 | Marie Allen | 28 | Daughter | Stenographer | Pennsylvania |
| 11 | William F. Allen | 23 | Son | Bus-Boy | Pennsylvania |
| 12 | Raymond B. Allen | 20 | Son | Messenger | Pennsylvania |
| 13 | Catharine Allen | 15 | Daughter | — | Pennsylvania |
| 14 | Provert Lucas | 32 | Son-in-law | Assistant Manager | Ireland |
| 15 | Sarah Lucas | 27 | Daughter | Head-Waitress | Pennsylvania |
| 16 | Joan Lucas | 4 | Grand-daughter | — | Pennsylvania |
| 17 | Mary King | 59 | Head | — | Pennsylvania |
| 18 | Mary E King | 23 | Daughter | Secretary | Pennsylvania |
| 19 | Joseph King | 21 | Son | — | Pennsylvania |
| 20 | Anna Craney | 57 | Sister | Secretary | Pennsylvania |
| 21 | John E. Stevens | 47 | Head | Foreman | Pennsylvania |
| 22 | Mary E. Stevens | 47 | Wife | — | Pennsylvania |
| 23 | John E Jr. Stevens | 16 | Son | — | West Virginia |
| 24 | Christian H Aitken | 58 | Head | Clerk | Pennsylvania |
| 25 | Eleanor W. Aitken | 56 | Wife | — | Pennsylvania |
| 26 | Mary C Aitken | 18 | Daughter | Secretary | Pennsylvania |
| 27 | Horace J. Van Huren | 46 | Head | Electric-Welder | Pennsylvania |
| 28 | Lillian Van Huren | 41 | Wife | — | Pennsylvania |
| 29 | Thomas H Craney | 52 | Head | — | Pennsylvania |
| 30 | Gertrude Craney | 47 | Wife | Saleslady | Pennsylvania |
| 31 | Frances M. Craney | 25 | Daughter | Telephone Operator | Pennsylvania |
| 32 | Ilene M. Craney | 22 | Daughter | Filing-Clerk | Pennsylvania |
| 33 | Thomas J. Craney | 11 | Son | — | Pennsylvania |
| 34 | John Craney | 7 | Son | — | Pennsylvania |
| 35 | Florence Mcclatchey | 61 | Head | — | Maryland |
| 36 | Agnes Conan | 53 | Lodger | Seamstress | Pennsylvania |
| 37 | Katharine Monoghan | 62 | Head | — | Pennsylvania |
| 38 | Mary Dodds | 38 | Lodger | Secretary | Pennsylvania |
| 39 | Peter Storm | 60 | Head | Real Estate Assessor | Germany |
| 40 | Wally Storm | 50 | Wife | — | Germany |
Pedigree Summary
Thomas + 3 siblings
Gen 1 · 6 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)