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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 Augustus & Margaretta — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
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 | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marion Oliver | Daughter | — | 18 | ~1922 |
| Hilda Oliver | Daughter | — | 22 | ~1918 |
| Elizabeth Oliver | Daughter | — | 23 | ~1917 |
| Matilda Oliver | Head | — | 52 | ~1888 |
| John Oliver | Son | — | 21 | ~1919 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age
Allegheny, Pennsylvania · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Oliver |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Oliver |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 21
Allegheny-County, Pennsylvania · implied b. ~1919 — 5 household members
| Surname | Oliver |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | New Worker |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H 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 John Oliver across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Augustus Oliver (~0.92 confidence) and mother Margaretta Oliver (~0.92 confidence) and mother Matilda Oliver (~0.92 confidence) and father Ora Oliver (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Augustus Oliver
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Margaretta Oliver
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Matilda Oliver
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
Ora Oliver
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Oliver
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Marion Oliver
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hilda Oliver
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Oliver
Sibling · 1940 · age 23
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-t0627-03661-00770)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emma Carter | 41 | Head | Maid | Virginia |
| 2 | Grace Carter | 19 | Daughter | — | Pennsylvania |
| 3 | Oliver Carter | 18 | Son | — | Pennsylvania |
| 4 | Norman Carter | 17 | Son | — | Pennsylvania |
| 5 | Adolph Blair | 48 | Boarder | Janitor | Virginia |
| 6 | Moses Patterson | 45 | Boarder | Laborer | Virginia |
| 7 | Albert Johnson | 36 | Head | Chauffeur | Virginia |
| 8 | Graham Johnson | 31 | Wife | — | Virginia |
| 9 | Arno Velas | 42 | Head | Laborer | Pennsylvania |
| 10 | Vivian Velas | 35 | Wife | Beauty Work | Pennsylvania |
| 11 | Rudolph Velas | 16 | Son | Apprentice | Pennsylvania |
| 12 | Carrie Allen | 58 | Mother-in-law | — | West Virginia |
| 13 | Elizabeth Moore | 45 | Head | Sewing Project | Pennsylvania |
| 14 | William Moore | 20 | Son | Helper | Pennsylvania |
| 15 | Martha Moore | 18 | Daughter | — | Pennsylvania |
| 16 | Richard Hurley | 41 | Head | Clerk | Pennsylvania |
| 17 | Florence Hurley | 37 | Wife | — | Pennsylvania |
| 18 | Dorothy Hurley | 19 | Daughter | — | Pennsylvania |
| 19 | Richard Jr. Hurley | 17 | Son | — | Pennsylvania |
| 20 | Marie Hurley | 12 | Daughter | — | Pennsylvania |
| 21 | Robert Hurley | 10 | Son | — | Pennsylvania |
| 22 | Audrey Hurley | 3 | Daughter | — | Pennsylvania |
| 23 | Cornelius Pleas | 41 | Lodger | Wall Washer | Italy |
| 24 | Eugene Covelli | 44 | Head | Gardner | Italy |
| 25 | Marie Covelli | 38 | Wife | — | Italy |
| 26 | Eugene Jr. Covelli | 16 | Son | — | Pennsylvania |
| 27 | Angelo Covelli | 13 | Son | — | Pennsylvania |
| 28 | Matilda Oliver | 52 | Head | — | Pennsylvania |
| 29 | Elizabeth Oliver | 23 | Daughter | Factory Work | Pennsylvania |
| 30 | Hilda Oliver | 22 | Daughter | — | Pennsylvania |
| 31 | John Oliver THIS PERSON | 21 | Son | New Worker | Pennsylvania |
| 32 | Marion Oliver | 18 | Daughter | — | Pennsylvania |
| 33 | Howard Nipple | 37 | Head | — | Pennsylvania |
| 34 | Leona Nipple | 31 | Wife | — | Pennsylvania |
| 35 | Kenneth Nipple | 17 | Son | — | Pennsylvania |
| 36 | Marie Nipple | 13 | Daughter | — | Pennsylvania |
| 37 | Lorane Nipple | 4 | Daughter | — | Pennsylvania |
| 38 | Howard Jr. Nipple | 3 | Son | — | Pennsylvania |
| 39 | Charles Berardelli | 47 | Head | Proprietor | Italy |
| 40 | Carmella Berardelli | 41 | Wife | — | Italy |
Pedigree Summary
John + 3 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)