JG
John Graham — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this John Graham across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Joseph & Dora — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Graham |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Santa Rosa |
| 1935 Residence (County) | Sonoma |
| Additional Details | |
| Occupation | New worker |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | New Worker |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Joseph Graham | Head | — | 68 | ~1872 |
| John Graham | Son | — | 28 | ~1912 |
| Joseph Graham | Son | — | 33 | ~1907 |
| Dora Graham | Spouse | — | 64 | ~1876 |
Census Appearances
1920
San Francisco, …
Son, age 8
San Francisco, California · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 18
San Francisco, California · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| 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 28
San-Francisco-County, California · implied b. ~1912 — 4 household members
| Surname | Graham |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Santa Rosa |
| 1935 Residence (County) | Sonoma |
| Occupation | New worker |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| 1935 Residence | California |
| 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 Graham across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Graham (~0.92 confidence) and mother Dora Graham (~0.92 confidence) and mother Lola Graham (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Graham
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Dora Graham
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Lola Graham
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Graham
Son · 1940 · age 28 · b. ~1912 · California
★ You are viewing this record
Sibling
Joseph Graham
Sibling · 1940 · age 33
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-t0627-00311-00269)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sarah Cronnin | 62 | Wife | — | California |
| 2 | Evelyn Cronnin | 39 | Daughter | — | California |
| 3 | Jack Cronnin | 32 | Son | Clerk | California |
| 4 | Glen Stewart | 40 | Head | Marine Engineer | California |
| 5 | Olive Stewart | 60 | Mother | — | California |
| 6 | Franklin Searle | 34 | Head | Office Clerk | Massachusetts |
| 7 | Margaret Searle | 29 | Wife | — | Colorado |
| 8 | Barbara Searle | 10 | Daughter | — | California |
| 9 | Phillis Searle | 8 | Daughter | — | California |
| 10 | Agnes Fitzsimmons | 65 | Mother in law | — | Colorado |
| 11 | Lucille Vogel | 40 | Head | Telephone Oper | California |
| 12 | Alphonse Maquin | 25 | Head | Elevator Operator | California |
| 13 | Irene Maquin | 19 | Wife | — | Oklahoma |
| 14 | John Maquin | 4 | Son | — | California |
| 15 | Carol Maquin | 2 | Daughter | — | California |
| 16 | Adrienne Rice | 42 | Head | Seamstress | California |
| 17 | Blanche Rice | 50 | Partner | Seamstress | Washington |
| 18 | Amos Livisay | 31 | Head | Laborer | Missouri |
| 19 | Esther Livisay | 30 | Wife | — | Missouri |
| 20 | Barbara Livisay | 7 | Daughter | — | Missouri |
| 21 | Silvia Livisay | 1 | Daughter | — | Missouri |
| 22 | Ellsworth Rico | 29 | Head | Specialist Machinist | California |
| 23 | Hortense Rico | 29 | Wife | — | California |
| 24 | Catalina Rico | 62 | Mother in law | — | Mexico |
| 25 | Robert Rico | 12 | Brother | — | California |
| 26 | William Lavin | 43 | Head | Longshoreman | California |
| 27 | Viola Lavin | 47 | Daughter | — | California |
| 28 | Joseph F. Graham | 68 | Head | — | California |
| 29 | Dora Graham | 64 | Wife | — | California |
| 30 | Joseph Jr. Graham | 33 | Son | Painter | California |
| 31 | John Graham THIS PERSON | 28 | Son | New Worker | California |
| 32 | Clement Mccormick | 34 | Head | Sailor | Iowa |
| 33 | Olive Mccormick | 36 | Wife | Waitress | Utah |
| 34 | Lois Mccormick | 8 | Daughter | — | California |
| 35 | Patrick Mccormick | 3 | Son | — | California |
| 36 | William Fedoroff | 29 | Head | Marine Engineer | Michigan |
| 37 | Ethel Fedoroff | 30 | Wife | Waitress | South Dakota |
| 38 | William Fedoroff | 0 | Son | — | California |
| 39 | William Baker | 21 | Head | Chemist | California |
| 40 | Jacob W. Slaughter | 21 | Partner | Lithographer | California |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 3 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)