JO
John Oliver — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Oliver across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Rufus & Hughie — first a son (b.~1917), then head of a 8-person household.
Age 23
b. ~1917
Male
Son
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Oliver |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Laborer |
| Industry | Wholesale House |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 60 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Laborer |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1917 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Orelee Oliver | Daughter | — | 18 | ~1922 |
| Hughie Oliver | Head | — | 50 | ~1890 |
| John Oliver | Son | — | 23 | ~1917 |
| Oscar Oliver | Son | — | 16 | ~1924 |
| Earnest Oliver | Son | — | 19 | ~1921 |
| George Oliver | Son | — | 27 | ~1913 |
| Cornelius Oliver | Son | — | 22 | ~1918 |
| Mamie Oliver | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 5
Allegheny, Pennsylvania · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Oliver |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Allegheny, Pennsylvania
Son, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Oliver |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Truck driver |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Allegheny-County, Pennsylvania
Son, age 23
Allegheny-County, Pennsylvania · implied b. ~1917 — 8 household members
| Surname | Oliver |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Laborer |
| Industry | Wholesale House |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 60 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Oliver across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Rufus Oliver (~0.92 confidence) and father Hughie Oliver (~0.92 confidence) and mother Minnie Oliver (~0.92 confidence) and father Hughie Oliver (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Rufus Oliver
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Hughie Oliver
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Minnie Oliver
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Hughie Oliver
b. ~1892
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Oliver
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Orelee Oliver
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Oscar Oliver
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Oliver
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cornelius Oliver
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earnest Oliver
Sibling · 1940 · age 19
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
38 people indexed on this census page (nara:1940:m-t0627-03654-00235)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eliner Pease | 22 | Daughter | — | Pennsylvania |
| 2 | Carlton Pease | 2 | Son | — | Pennsylvania |
| 3 | Joilee Pease | 0 | Daughter | — | Pennsylvania |
| 4 | Alyce Pease | 15 | Daughter | — | Pennsylvania |
| 5 | James Tripplett | 64 | Uncle | Janitor | Virginia |
| 6 | Paul J. Woodruff | 62 | Head | Janitor | Virginia |
| 7 | Mary Woodruff | 58 | Wife | Maid | Virginia |
| 8 | Cassie Smith | 73 | Sister | — | Virginia |
| 9 | William Smith | 46 | Head | Policeman | Pennsylvania |
| 10 | Annie Smith | 45 | Wife | — | North Carolina |
| 11 | James Smith | 19 | Son | Janitor | Pennsylvania |
| 12 | Arnold Smith | 16 | Son | — | Pennsylvania |
| 15 | Joseph Carter | 46 | Head | Yardman | Virginia |
| 16 | Effie Carter | 47 | Wife | — | Virginia |
| 17 | James Carter | 27 | Son | Truck Driver | Virginia |
| 18 | Edith Carter | 21 | Daughter | — | Virginia |
| 19 | Ethel Carter | 19 | Daughter | New Worker | Pennsylvania |
| 20 | Benjamin Shaw | 45 | Head | Janitor | North Carolina |
| 21 | Lorena Shaw | 39 | Wife | — | North Carolina |
| 22 | Benjamin Shaw | 8 | Son | — | Pennsylvania |
| 23 | William Shaw | 42 | Brother | Auto Washer | North Carolina |
| 24 | Shedrick Fields | 52 | Head | Porter | Virginia |
| 25 | Lucy Fields | 51 | Wife | — | Virginia |
| 26 | Julia Gray | 15 | Adopted Daughter | — | Virginia |
| 27 | Edwin C. Berry | 29 | Head | Recreation Secretary | Ohio |
| 28 | Alma Berry | 29 | Wife | Social Worker | Pennsylvania |
| 29 | Mother Kittie | None | F | — | — |
| 30 | Robert H. Logan | 59 | Head | Real Estate Agent | Maryland |
| 31 | Margaret Logan | 60 | Wife | — | New Jersey |
| 32 | Robert H. Jr. Logan | 13 | Son | — | Pennsylvania |
| 33 | Hughie Oliver | 50 | Head | Laborer | Alabama |
| 34 | Mamie Oliver | 49 | Wife | Daywork | Alabama |
| 35 | George Oliver | 27 | Son | Driver | Alabama |
| 36 | John Oliver THIS PERSON | 23 | Son | Laborer | Alabama |
| 37 | Cornelius Oliver | 22 | Son | Cook | Alabama |
| 38 | Earnest Oliver | 19 | Son | — | Pennsylvania |
| 39 | Orelee Oliver | 18 | Daughter | — | Pennsylvania |
| 40 | Oscar Oliver | 16 | Son | — | Pennsylvania |
Pedigree Summary
John + 5 siblings
Gen 1 · 4 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)