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Leo Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this Leo Smith across the 1920, 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Margaret & Margaret — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Smith |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittston City |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Occupation | Sales clerk |
| Industry | Retail drug |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 260 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Sales Clerk |
| Township / Ward | Pittston City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leo | Age | Birth yr |
|---|---|---|---|---|
| Catherine Smith | Daughter | — | 29 | ~1911 |
| Thomas Smith | Head | — | 58 | ~1882 |
| Leo Smith | Son | — | 28 | ~1912 |
| Margaret Smith | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Luzerne, Pennsylvania
Son, age 7
Luzerne, Pennsylvania · implied b. ~1913 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Son, age 18
Luzerne, Pennsylvania · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Attendant |
| Industry | Gas Station |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Son, age 28
Luzerne-County, Pennsylvania · implied b. ~1912 — 4 household members
| Surname | Smith |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittston City |
| 1935 Residence (County) | Luzerne |
| Occupation | Sales clerk |
| Industry | Retail drug |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 260 |
| Highest Grade | Hs 4 |
| 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 Leo Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Margaret Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence) and father Thomas Smith (~0.92 confidence) and father Thomas Smith (~0.92 confidence) and father Thomas Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Smith
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Thomas Smith
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Thomas Smith
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Thomas Smith
b. ~1884
Source father
● Household
· direct · ~0.92
This person
Anchor record
Leo Smith
Son · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Catherine Smith
Sibling · 1940 · age 29
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03558-00233)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis Purcell | 34 | Head | Mail Carrier | Pennsylvania |
| 2 | Catherine Purcell | 34 | Wife | — | Pennsylvania |
| 3 | Francis Purcell | 7 | Son | — | Pennsylvania |
| 4 | Michael Purcell | 4 | Son | — | Pennsylvania |
| 5 | Mary Ella Purcell | 1 | Daughter | — | Pennsylvania |
| 6 | Mary O'Neil | 75 | Head | — | Pennsylvania |
| 7 | Mary O'Neil | 40 | Daughter | — | Pennsylvania |
| 8 | Ambrose Mcgarry | 39 | Head | Pay Clerk | Pennsylvania |
| 9 | Grace Mcgarry | 34 | Wife | — | Pennsylvania |
| 10 | Jean Mcgarry | 4 | Daughter | — | Pennsylvania |
| 11 | Robert Mcgarry | 1 | Son | — | Pennsylvania |
| 12 | Charles Curley | 76 | Lodger | — | Pennsylvania |
| 13 | Michael Conway | 57 | Head | Laborer | Pennsylvania |
| 14 | Theresa Conway | 54 | Wife | — | Pennsylvania |
| 15 | Theresa Conway | 22 | Daughter | New Worker | Pennsylvania |
| 16 | Edward Keating | 41 | Head | Gas Station Attendant | Pennsylvania |
| 17 | Mary Keating | 40 | Wife | — | Pennsylvania |
| 18 | Michael Keating | 19 | Son | Gas Station Attendant | Pennsylvania |
| 19 | John Keating | 15 | Son | — | Pennsylvania |
| 20 | Mary Donnelly | 54 | Head | — | Pennsylvania |
| 21 | Mary Donnelly | 26 | Daughter | Teacher | Pennsylvania |
| 22 | Catherine Donnelly | 19 | Daughter | New Worker | Pennsylvania |
| 23 | Jean Donnelly | 16 | Daughter | — | Pennsylvania |
| 24 | Margaret Clemens | 22 | Daughter | — | Pennsylvania |
| 25 | Andrew Clemens | 3 | Son-in-law | — | Pennsylvania |
| 26 | Mary Michaelitis | 65 | Head | — | Lithuania |
| 27 | James Fadden | 37 | Head | Bookkeeper | Pennsylvania |
| 28 | Catherine Fadden | 70 | Mother | — | Pennsylvania |
| 29 | Winifred Fadden | 45 | Sister | Field Supervisor | Pennsylvania |
| 30 | Henry Dooner | 30 | Head | Shovel Operator | Pennsylvania |
| 31 | Mary Dooner | 27 | Wife | — | Pennsylvania |
| 32 | George R. Riley | 72 | Head | — | England |
| 33 | Lillian Riley | 66 | Wife | — | Pennsylvania |
| 34 | Frances Boyle | 45 | Daughter | — | Pennsylvania |
| 35 | Claire Logan | 70 | Head | — | Pennsylvania |
| 36 | Mary Puckett | 46 | Partner | Maid | Pennsylvania |
| 37 | Thomas Smith | 58 | Head | Watchman | Pennsylvania |
| 38 | Margaret Smith | 58 | Wife | — | Pennsylvania |
| 39 | Catherine Smith | 29 | Daughter | Teacher | Pennsylvania |
| 40 | Leo Smith THIS PERSON | 28 | Son | Sales Clerk | Pennsylvania |
Pedigree Summary
Leo + 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)