JG
John Gilbert — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Gilbert across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Gilbert |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Thelma Gilbert | Daughter | — | 15 | ~1925 |
| Nancy Gilbert | Daughter | — | 9 | ~1931 |
| Jane Gilbert | Daughter | — | 18 | ~1922 |
| Helen Gilbert | Daughter | — | 11 | ~1929 |
| Clyde Gilbert | Head | — | 49 | ~1891 |
| Benjamin Gilbert | Son | — | 10 | ~1930 |
| William Gilbert | Son | — | 20 | ~1920 |
| Robert Gilbert | Son | — | 3 | ~1937 |
| John Gilbert | Son | — | 17 | ~1923 |
| Helena Gilbert | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 7
Allegheny, Pennsylvania · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gilbert |
| 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 17
Allegheny-County, Pennsylvania · implied b. ~1923 — 10 household members
| Surname | Gilbert |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| 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 Gilbert across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Gilbert
Son · 1940 · age 17 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Nancy Gilbert
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Benjamin Gilbert
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Gilbert
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Gilbert
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Gilbert
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Gilbert
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Gilbert
Sibling · 1940 · age 18
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-t0627-03668-00116)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clyde Gilbert | 49 | Head | Welder | Pennsylvania |
| 2 | Helena Gilbert | 40 | Wife | — | Pennsylvania |
| 3 | William Gilbert | 20 | Son | Clerk | Pennsylvania |
| 4 | Jane Gilbert | 18 | Daughter | — | Pennsylvania |
| 5 | John Gilbert THIS PERSON | 17 | Son | — | Pennsylvania |
| 6 | Thelma Gilbert | 15 | Daughter | — | Pennsylvania |
| 7 | Benjamin Gilbert | 10 | Son | — | Pennsylvania |
| 8 | Helen Gilbert | 11 | Daughter | — | Pennsylvania |
| 9 | Nancy Jean Gilbert | 9 | Daughter | — | Pennsylvania |
| 10 | Robert Gilbert | 3 | Son | — | Pennsylvania |
| 11 | Louis Thevaglige|Thevaglize | 26 | Head | Laborer | Pennsylvania |
| 12 | Theresa Thevaglige|Thevaglize | 26 | Wife | — | Pennsylvania |
| 13 | Lorraine Thevaglige|Thevaglize | 8 | Daughter | — | Pennsylvania |
| 14 | Mary Thevaglige|Thevaglize | 7 | Daughter | — | Pennsylvania |
| 15 | Jackson Bullard | 60 | Head | Plumber | Pennsylvania |
| 16 | Mary Bullard | 55 | Wife | — | Illinois |
| 17 | Matt Bullard | 16 | Son | — | Pennsylvania |
| 18 | John Wielandt | 30 | Head | Laborer | Pennsylvania |
| 19 | Marie Wielandt | 25 | Wife | Saleslady | Pennsylvania |
| 20 | Henry Bozan | 66 | Head | Clerk | Ohio |
| 21 | William Jacobs | 43 | Head | Salesman | Pennsylvania |
| 22 | Mary Jane Jacobs | 49 | Wife | — | Pennsylvania |
| 23 | Mary Alice Jacobs | 8 | Daughter | — | Pennsylvania |
| 24 | Clifford Charles Liebelt | 28 | Head | Laborer | Pennsylvania |
| 25 | Helen Elsie Liebelt | 21 | Wife | — | Pennsylvania |
| 26 | Erwin Sr. Brenner | 25 | Head | Salesman | Pennsylvania |
| 27 | Edna Brenner | 24 | Wife | — | Pennsylvania |
| 28 | Erwin Jr. Brenner | 2 | Son | — | Pennsylvania |
| 29 | Carolyn Brenner | 0 | Daughter | — | Pennsylvania |
| 30 | Mattie H. Eghler | 71 | Head | — | Pennsylvania |
| 31 | Max Rhoeser | 63 | Head | Secretary | Germany |
| 32 | Minnie Rhoeser | 61 | Wife | — | Pennsylvania |
| 33 | James F. Simmons | 64 | Head | Barber | Pennsylvania |
| 34 | Alberta M. Simmons | 61 | Wife | — | Pennsylvania |
| 35 | Jeffrey Simmons | 32 | Head | Organist | Pennsylvania |
| 36 | Margaret Simmons | 28 | Wife | — | Pennsylvania |
| 37 | James L. Simmons | 4 | Son | — | Pennsylvania |
| 38 | Charles Simmons | 0 | Son | — | Pennsylvania |
| 39 | Helen Scheerley | 33 | Head | — | Pennsylvania |
| 40 | Dorothy E. Scheerley | 12 | Daughter | — | 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)