JG
John Gibson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Gibson across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Robert & Ella — first a son (b.~1910), then head of a 7-person household.
Age 30
b. ~1910
Male
Son
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Gibson |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1910 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Thomas Gibson | Head | — | 56 | ~1884 |
| Mary Gibson | Other | — | 3 | ~1937 |
| Marie Gibson | Other | — | 27 | ~1913 |
| John Nagle | Other | — | 49 | ~1891 |
| Martha Gibson | Other | — | 1 | ~1939 |
| John Gibson | Son | — | 30 | ~1910 |
| Helen Gibson | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 9
Allegheny, Pennsylvania · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gibson |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 19
Allegheny, Pennsylvania · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gibson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 30
Allegheny-County, Pennsylvania · implied b. ~1910 — 7 household members
| Surname | Gibson |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 Gibson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Gibson (~0.92 confidence) and mother Ella Gibson (~0.92 confidence) and father Thomas Gibson (~0.92 confidence) and mother Helen Gibson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Gibson
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Ella Gibson
b. ~1873
Source mother
● Household
· direct · ~0.92
Father
Thomas Gibson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Helen Gibson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Gibson
Son · 1940 · age 30 · b. ~1910 · Pennsylvania
★ You are viewing this record
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-t0627-03660-00203)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James H. Jones | 47 | Head | Laborer | Pennsylvania |
| 42 | Mary E. Jones | 41 | Wife | — | Pennsylvania |
| 43 | Robert Jones | 16 | Son | — | Pennsylvania |
| 44 | Ella Marie Jones | 14 | Daughter | — | Pennsylvania |
| 45 | William Jones | 12 | Son | — | Pennsylvania |
| 46 | Mary Jane Jones | 7 | Daughter | — | Pennsylvania |
| 47 | Gerald Jones | 2 | Son | — | Pennsylvania |
| 48 | George Kilel | Kikel | 47 | Head | Plater | Pennsylvania |
| 49 | Marie E. Kilel | Kikel | 40 | Wife | — | Pennsylvania |
| 50 | Earl Kilel | Kikel | 19 | Son | Pump-House Helper | Pennsylvania |
| 51 | Evelyn Kilel | Kikel | 17 | Daughter | — | Pennsylvania |
| 52 | Frank Hannegan | 56 | Head | Salesman | Pennsylvania |
| 53 | Helen E. Hannegan | 39 | Wife | — | Pennsylvania |
| 54 | Edward Seibert | 21 | Step-Son | Delivery-Man | Pennsylvania |
| 55 | Lewis Gersam | Gerson | 58 | Head | President | Russia |
| 56 | Bessie E. Gersam | Gerson | 51 | Wife | — | Pennsylvania |
| 57 | Betty Porter | 23 | Niece | Waitress | Pennsylvania |
| 58 | Carmin Marmarosa | 35 | Head | Barber | Pennsylvania |
| 59 | Helen E. Marmarosa | 32 | Wife | — | Pennsylvania |
| 60 | William Marmarosa | 13 | Son | — | Pennsylvania |
| 61 | Robert Marmarosa | 6 | Son | — | Pennsylvania |
| 62 | Paul E. Stock | 44 | Head | Laborer | Pennsylvania |
| 63 | Agnes Stock | 43 | Wife | — | Pennsylvania |
| 64 | Paul Jr. Stock | 20 | Son | New Worker | Pennsylvania |
| 65 | Richard Stock | 18 | Son | — | Pennsylvania |
| 66 | Charles Stock | 17 | Son | — | Pennsylvania |
| 67 | Rose Marie Stock | 13 | Daughter | — | Pennsylvania |
| 68 | Mary Teresa Stock | 12 | Daughter | — | Pennsylvania |
| 69 | Agnes Veronica Stock | 7 | Daughter | — | Pennsylvania |
| 70 | Robert Stock | 4 | Son | — | Pennsylvania |
| 71 | Kathleen Stock | 2 | Daughter | — | Pennsylvania |
| 72 | Anna E. Halleran | 70 | Head | — | Scotland |
| 73 | Mary Halleran | 27 | Daughter | Waitress | Pennsylvania |
| 74 | Thomas Gibson | 56 | Head | Foreman | Ohio |
| 75 | Helen Gibson | 51 | Wife | — | Pennsylvania |
| 76 | John H. Gibson THIS PERSON | 30 | Son | — | Pennsylvania |
| 77 | Marie Gibson | 27 | Daughter-in-law | — | Pennsylvania |
| 78 | Mary V. Gibson | 3 | Grand-daughter | — | Pennsylvania |
| 79 | Martha Gibson | 1 | Grand-daughter | — | Pennsylvania |
| 80 | John Nagle | 49 | Brother-in-law | Automobile Mechanic | Pennsylvania |
Pedigree Summary
John
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)