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John Sloan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Sloan across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 12-person household.
Age 18
b. ~1922
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Sloan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1922 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Cleola Sloan | Daughter | — | 16 | ~1924 |
| Martha Sloan | Daughter | — | 1 | ~1939 |
| Ernest Sloan | Son | — | 10 | ~1930 |
| Victorene Sloan | Daughter | — | 12 | ~1928 |
| Mamie Sloan | Daughter | — | 14 | ~1926 |
| John Sloan | Son | — | 18 | ~1922 |
| Samuel Sloan | Son | — | 3 | ~1937 |
| George Sloan | Head | — | 43 | ~1897 |
| Nancy Sloan | Daughter | — | 5 | ~1935 |
| Mollie Sloan | Spouse | — | 38 | ~1902 |
| George Sloan | Son | — | 8 | ~1932 |
| Mary Sloan | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 7
Allegheny, Pennsylvania · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Slania |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 18
Allegheny-County, Pennsylvania · implied b. ~1922 — 12 household members
| Surname | Sloan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | Hs 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 John Sloan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Sloan
Son · 1940 · age 18 · b. ~1922 · Pennsylvania
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Sibling
Martha Sloan
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Sloan
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Sloan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Sloan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Sloan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Victorene Sloan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Sloan
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest Sloan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cleola Sloan
Sibling · 1940 · age 16
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-t0627-03652-00589)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Velanci | 19 | Son | New Worker | Pennsylvania |
| 2 | Martha Velanci | 17 | Daughter | — | Pennsylvania |
| 3 | Joseph Mckay | 48 | Head | Laborer | South Carolina |
| 4 | Pearl Mckay | 40 | Wife | — | Georgia |
| 5 | James Malloy | 20 | Son | Janitor | Pennsylvania |
| 6 | Pearl Cugh | 19 | Lodger | Seamstress | Florida |
| 7 | Cornelius Austin | 63 | Head | Plumber | Pennsylvania |
| 8 | Anna Austin | 61 | Wife | — | Pennsylvania |
| 9 | Grace Moorehead | 42 | Head | — | Virginia |
| 10 | Martin Moorehead | 18 | Son | Laborer | North Carolina |
| 11 | Joseph Moorehead | 12 | Son | — | Pennsylvania |
| 12 | Jeremiah Moorehead | 10 | Son | — | Pennsylvania |
| 13 | Nora Moorehead | 8 | Daughter | — | Pennsylvania |
| 14 | Arthur Moorehead | 6 | Son | — | Pennsylvania |
| 15 | Anthony Moorehead | 4 | Son | — | Pennsylvania |
| 16 | Edward Moorehead | 2 | Son | — | Pennsylvania |
| 17 | Elizabeth Clarkson | 58 | Head | — | Kentucky |
| 18 | Pasquale Nardo | 46 | Head | Proprietor | Italy |
| 19 | Stephen Siguin | 47 | Lodger | Laborer | Italy |
| 20 | Edward Link | 48 | Head | Mechanic | Virginia |
| 21 | Mabel Link | 28 | Wife | — | Pennsylvania |
| 22 | Frank Bertidelli | 54 | Head | Laborer | Italy |
| 23 | Frances Bertidelli | 46 | Wife | — | Italy |
| 24 | John Bertidelli | 16 | Son | — | Pennsylvania |
| 25 | Frank Bertidelli | 14 | Son | — | Pennsylvania |
| 26 | Alphonce Bertidelli | 11 | Son | — | Pennsylvania |
| 27 | Anthony Bertidelli | 8 | Son | — | Pennsylvania |
| 28 | George Sloan | 43 | Head | Elevator Oper | Arkansas |
| 29 | Mollie Sloan | 38 | Wife | — | Arkansas |
| 30 | John Sloan THIS PERSON | 18 | Son | Laborer | Pennsylvania |
| 31 | Cleola Sloan | 16 | Daughter | — | Pennsylvania |
| 32 | Mamie Sloan | 14 | Daughter | — | Pennsylvania |
| 33 | Victorene Sloan | 12 | Daughter | — | Pennsylvania |
| 34 | Ernest Sloan | 10 | Son | — | Pennsylvania |
| 35 | George Sloan | 8 | Son | — | Pennsylvania |
| 36 | Nancy Sloan | 5 | Daughter | — | Pennsylvania |
| 37 | Samuel Sloan | 3 | Son | — | Pennsylvania |
| 38 | Martha Sloan | 1 | Daughter | — | Pennsylvania |
| 39 | Mary Sloan | 1 | Daughter | — | Pennsylvania |
| 40 | Raymond Stotts | 41 | Head | Laborer | Pennsylvania |
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)