JG
John Gibson — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this John Gibson across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Wilfred & Mary — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Gibson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Shipping Clerk |
| Industry | Brass Company |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1080 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Shipping Clerk |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1918 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marilyn Gibson | Daughter | — | 13 | ~1927 |
| Evelyn Gibson | Daughter | — | 15 | ~1925 |
| Dorothy Gibson | Daughter | — | 14 | ~1926 |
| Mary Gibson | Head | — | 52 | ~1888 |
| Arthur Gibson | Son | — | 9 | ~1931 |
| John Gibson | Son | — | 22 | ~1918 |
Census Appearances
1920
San Francisco, …
Son, age 1
San Francisco, California · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gibson |
| Given Name | John L |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | California |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 12
San Francisco, California · implied b. ~1918 — 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 | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 22
San-Francisco-County, California · implied b. ~1918 — 6 household members
| Surname | Gibson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Shipping Clerk |
| Industry | Brass Company |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1080 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Wilfred Gibson (~0.92 confidence) and mother Mary Gibson (~0.92 confidence) and mother Mary Gibson (~0.92 confidence) and mother Marie Gibson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wilfred Gibson
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Gibson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Mary Gibson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Marie Gibson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Gibson
Son · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
Sibling
Arthur Gibson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Gibson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Gibson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilyn Gibson
Sibling · 1940 · age 13
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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00307-00334)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eva J. Tender | 40 | Daughter | Accountant | California |
| 2 | Ray R. Tender | 30 | Son | Salesman | California |
| 3 | Julio Maggio | 54 | Head | Presser | California |
| 4 | Angelina Maggio | 29 | Wife | — | California |
| 5 | Robert Maggio | 4 | Son | — | California |
| 6 | Frank Fontana | 59 | Head | Janitor | Italy |
| 7 | Bridgid Fontana | 60 | Wife | — | Italy |
| 8 | Anthony Fontana | 27 | Son | Scavenger | California |
| 9 | Louis Fontana | 25 | Son | Scavenger | Italy |
| 10 | Al Fontana | 23 | Son | Scavenger | Italy |
| 11 | Momenic Teducci | 57 | Head | Window Cleaner | Italy |
| 12 | Mary Teducci | 56 | Wife | — | Italy |
| 13 | Rose Campodonico | 31 | Daughter | — | Italy |
| 14 | Robert Campodonico | 7 | Grandson | — | California |
| 15 | Charles Navaretti | 45 | Head | Installer | California |
| 16 | Janet Navaretti | 41 | Wife | — | France |
| 17 | Archie Neri | 64 | Father-in-law | — | Italy |
| 18 | W. Foster | 53 | Head | Grocer | Iowa |
| 19 | Ends Here | None | BLOCK | — | — |
| 20 | John B. Borrachia | 62 | Head | Gen Contractor | France |
| 21 | Lawrence Connelly | 35 | Son-in-law | Clerk | California |
| 22 | Louise Connelly | 34 | Daughter | — | California |
| 23 | Mary Lou Connelly | 1 | Granddaughter | — | California |
| 24 | Mario Quintini | 30 | Head | Laborer | Italy |
| 25 | Nellie Quintini | 31 | Wife | Bookkeeper | California |
| 26 | Edward Garcia | 23 | Head | Helper | Mexico |
| 27 | Ethel Garcia | 24 | Wife | — | California |
| 28 | James O'Brien | 45 | Head | Conductor | California |
| 29 | Anna O'Brien | 44 | Wife | — | California |
| 30 | Russell O'Brien | 13 | Son | — | California |
| 31 | Robert O'Brien | 8 | Son | — | California |
| 32 | Mary Gibson | 52 | Head | — | California |
| 33 | John Gibson THIS PERSON | 22 | Son | Shipping Clerk | California |
| 34 | Evelyn Gibson | 15 | Daughter | — | California |
| 35 | Dorothy Gibson | 14 | Daughter | — | California |
| 36 | Marilyn Gibson | 13 | Daughter | — | California |
| 37 | Arthur Gibson | 9 | Son | — | California |
| 38 | Ambrose Milton | 51 | Head | Truck Driver | California |
| 39 | James Milton | 20 | Son | Usher | California |
| 40 | Frank O'Rourke | 23 | Uncle | — | California |
Pedigree Summary
John + 4 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)