JG
John Graves — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this John Graves across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 9-person household.
Age 23
b. ~1907
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Graves |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Cable Operator |
| Industry | Cable Car |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Cable Operator |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1907 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ralph Graves | Son | — | 20 | ~1910 |
| Helen Graves | Daughter | — | 15 | ~1915 |
| John Graves | Head | — | 46 | ~1884 |
| Jennie Graves | Spouse | — | 45 | ~1885 |
| John Graves | Son | — | 23 | ~1907 |
| Dorothy Graves | Daughter | — | 11 | ~1919 |
| Raymond Graves | Son | — | 22 | ~1908 |
| Harold Graves | Son | — | 7 | ~1923 |
| William Graves | Son | — | 18 | ~1912 |
Census Appearances
1930
San Francisco, …
Son, age 23
San Francisco, California · implied b. ~1907 — 9 household members
| Surname | Graves |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | California |
| Occupation | Cable Operator |
| Industry | Cable Car |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Head, age 33
San-Francisco-County, California · implied b. ~1907 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Greaves |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Honolulu |
| 1935 Residence (County) | Honolulu |
| Occupation | Telegraph OP. |
| Industry | Communications |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 242 |
| Highest Grade | No 8 |
| 1935 Residence | Honolulu |
| 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 Graves across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Graves
Son · 1930 · age 23 · b. ~1907 · California
★ You are viewing this record
Sibling
William Graves
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Graves
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Graves
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Graves
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Graves
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Graves
Sibling · 1930 · age 7
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
1930 US Federal Census — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel199:0390)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Graves | 46 | Head | Mill Hand | Oregon |
| 2 | Jennie E Graves | 45 | Wife | — | California |
| 3 | John W Graves THIS PERSON | 23 | Son | Cable Operator | California |
| 4 | Raymond J Graves | 22 | Son | Cabinet Maker | California |
| 5 | Ralph Graves | 20 | Son | Check Boy | California |
| 6 | William C Graves | 18 | Son | Ball Player | California |
| 7 | Helen M Graves | 15 | Daughter | — | California |
| 8 | Dorothy A Graves | 11 | Daughter | — | California |
| 9 | Harold P Graves | 7 | Son | — | California |
| 10 | Chas. J Besendes | 72 | Head | Retired | Germany |
| 11 | Ella J Besendes | 65 | Wife | — | Germany |
| 12 | Frank E Brady | 35 | Head | Police Sergeant | California |
| 13 | Violet Brady | 30 | Wife | Secretary | California |
| 14 | William D Higuera | 62 | Head | Retired | California |
| 15 | Clara B Higuera | 47 | Wife | — | California |
| 16 | Marie C Higuera | 35 | Daughter | Presser | California |
| 17 | Lawrence W Higuera | 30 | Son | Cook Maker | California |
| 18 | Juanita Cerena | 27 | Daughter | — | California |
| 19 | Allan Cerena | 7 | Gr. Son | — | California |
| 20 | Sarah Schonbacher | 46 | Head | Domestic | Hawaii Is. |
| 21 | Mable C Schonbacher | 17 | Daughter | Filler | California |
| 22 | Vivian D Schonbacher | 16 | Daughter | — | California |
| 23 | John H Beer | 66 | Head | Laborer | Germany |
| 24 | Nadine S Beer | 58 | Wife | — | Germany |
| 25 | Nadine W Alsgroff | 34 | Daughter | Typist | California |
| 26 | Chas. A Deimes | 57 | Roomer | Retired | Idaho |
| 27 | Anna F Provitt | 60 | Head | — | California |
| 28 | B. Burt Wilbur | 36 | Daughter | — | California |
| 29 | Klaas Doornbos | 61 | Boarder | Tanner | Holland |
| 30 | B. Burt Jr. Wilbur | 11 | Gr. Son | — | California |
| 31 | Helen M Wilbur | 12 | Gr. Daughter | — | California |
| 32 | James Smith | 34 | Head | Car Conductor | Ireland |
| 33 | Rose A Smith | 26 | Wife | — | Ireland |
| 34 | James E Smith | 2 | Son | — | California |
| 35 | Elizabeth J Smith | 0 | Daughter | — | California |
| 36 | William J O'Reilly | 36 | Head | Fireman | California |
| 37 | Alice J O'Reilly | 34 | Wife | — | California |
| 38 | Alice H O'Reilly | 13 | Daughter | — | California |
| 39 | Angela M O'Reilly | 9 | Daughter | — | California |
| 40 | Patrick J Loughran | 31 | Head | Conductor | Ireland |
| 41 | Catherine Loughran | 28 | Wife | — | Irish Free State |
| 42 | Mary C Loughran | 1 | Daughter | — | California |
| 43 | Mary Dinnien | 25 | Sister-in-law | Hosiery Repair | Ireland |
| 44 | William A Ingling | 40 | Head | Store Keeper | Michigan |
| 45 | Laura S Ingling | 34 | Wife | — | Michigan |
| 46 | Betsy J Ingling | 14 | Daughter | — | Michigan |
| 47 | William P Ingling | 13 | Son | — | Michigan |
| 48 | Louise N Ingling | 6 | Daughter | — | California |
| 49 | Marianne Ingling | 5 | Daughter | — | California |
| 50 | Marion Ingling | 5 | Daughter | — | California |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)