JL
Joseph Leonard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Joseph Leonard across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 11-person household.
Age 19
b. ~1921
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Boyd Hill |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Boyd Hill |
| Est. Birth Year | ~1921 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Rose Leonard | Daughter | — | 7 | ~1933 |
| Alice Mayer | Other | — | 74 | ~1866 |
| Mary Leonard | Spouse | — | 39 | ~1901 |
| Isabelle Leonard | Daughter | — | 5 | ~1935 |
| Edward Leonard | Son | — | 11 | ~1929 |
| Wilma Leonard | Daughter | — | 14 | ~1926 |
| Ruth Leonard | Daughter | — | 9 | ~1931 |
| Mary Leonard | Daughter | — | 12 | ~1928 |
| Constantine Leonard | Head | — | 42 | ~1898 |
| Trussa Leonard | Daughter | — | 2 | ~1938 |
| Joseph Leonard | Son | — | 19 | ~1921 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 8
Allegheny, Pennsylvania · implied b. ~1922 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 19
Allegheny-County, Pennsylvania · implied b. ~1921 — 11 household members
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Boyd Hill |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H-2 |
| 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 Joseph Leonard across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Leonard
Son · 1940 · age 19 · b. ~1921 · Pennsylvania
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Sibling
Wilma Leonard
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Leonard
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Leonard
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabelle Leonard
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Leonard
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Leonard
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Trussa Leonard
Sibling · 1940 · age 2
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03414-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Moravitz | 46 | Head | Labor | Czechoslovakia |
| 2 | Emma Moravitz | 40 | Wife | — | Germany |
| 3 | Frank Moravitz | 21 | Son | Labor | Pennsylvania |
| 4 | William Moravitz | 20 | Son | Labor | Pennsylvania |
| 5 | George Marty | 53 | Head | Labor | Pennsylvania |
| 6 | Edith Marty | 50 | Wife | — | Pennsylvania |
| 7 | Ellwood Marty | 22 | Son | Labor | Pennsylvania |
| 8 | Martha Marty | 14 | Daughter | — | Pennsylvania |
| 9 | Helen Marty | 11 | Daughter | — | Pennsylvania |
| 10 | Frederick Marty | 9 | Son | — | Pennsylvania |
| 11 | Constantine Leonard | 42 | Head | Labor | Pennsylvania |
| 12 | Mary Leonard | 39 | Wife | — | Pennsylvania |
| 13 | Joseph Leonard THIS PERSON | 19 | Son | — | Pennsylvania |
| 14 | Wilma Leonard | 14 | Daughter | — | Pennsylvania |
| 15 | Mary O Leonard | 12 | Daughter | — | Pennsylvania |
| 16 | Edward Leonard | 11 | Son | — | Pennsylvania |
| 17 | Ruth Leonard | 9 | Daughter | — | Pennsylvania |
| 18 | Rose Leonard | 7 | Daughter | — | Pennsylvania |
| 19 | Isabelle Leonard | 5 | Daughter | — | Pennsylvania |
| 20 | Trussa Leonard | 2 | Daughter | — | Pennsylvania |
| 21 | Alice Mayer | 74 | Mother-in-law | — | Pennsylvania |
| 22 | Joseph Calder | 48 | Head | Labor | Pennsylvania |
| 23 | Myrtle Calder | 35 | Wife | — | Pennsylvania |
| 24 | Joseph Jr. Calder | 12 | Son | — | Pennsylvania |
| 25 | Kenneth Calder | 2 | Son | — | Pennsylvania |
| 26 | Frank Pickman | 31 | Head | Own Business | Pennsylvania |
| 27 | Caroline Pickman | 22 | Wife | — | Pennsylvania |
| 28 | Frank Jr. Pickman | 3 | Son | — | Pennsylvania |
| 29 | Joseph Vesely | 29 | Head | Labor | Czechoslovakia |
| 30 | Mary Vesely | 52 | Wife | — | Czechoslovakia |
| 31 | Clarence F Vesely | 29 | Son | Labor | Michigan |
| 32 | Frank E Vesely | 20 | Son | — | Pennsylvania |
| 33 | Helen S Vesely | 15 | Daughter | — | Pennsylvania |
| 34 | Frank Brueckle | 51 | Head | Labor | Pennsylvania |
| 35 | Josephine Brueckle | 53 | Wife | — | Czechoslovakia |
| 36 | Josephine Brueckle | 21 | Daughter | Labor | Pennsylvania |
| 37 | Irene Berrier | 14 | Granddaughter | — | Pennsylvania |
| 38 | Fred Shuco | 37 | Head | Labor | Czechoslovakia |
| 39 | Florence Shuco | 35 | Wife | — | Pennsylvania |
| 40 | May Shuco | 12 | Daughter | — | Pennsylvania |
Related Census Records
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)