JC
James Campbell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this James Campbell across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 6-person household.
Age 66
b. ~1864
Male
Head
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Campbell |
| Given Name | James E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland Northern |
| Mother's Birthplace | Ireland Northern |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1864 |
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 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Debra Johnson | Daughter | — | 27 | ~1903 |
| James Campbell | Head | — | 66 | ~1864 |
| Lawrence Johnson | Other | — | ~1930 | |
| Lawrence Johnson | Other | — | 30 | ~1900 |
| James Campbell | Son | — | 26 | ~1904 |
| John Campbell | Son | — | 22 | ~1908 |
Census Appearances
1920
San Francisco, …
Head, age 56
San Francisco, California · implied b. ~1864 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | James T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Steamship Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Head, age 66
San Francisco, California · implied b. ~1864 — 6 household members
| Surname | Campbell |
| Given Name | James E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland Northern |
| Mother's Birthplace | Ireland Northern |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Other, age 76
San-Francisco-County, California · implied b. ~1864 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | James E. |
| Relationship to Head | Father |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | California |
| 1935 Residence (City) | San Francisco City |
| 1935 Residence (County) | San Francisco |
| Occupation | No |
| Industry | No |
| Highest Grade | 8 |
| 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 James Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Campbell
Head · 1930 · age 66 · b. ~1864 · California
★ You are viewing this record
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:californiacensus00reel204:0589)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Floytta Nauman | 65 | Head | None | Missouri |
| 2 | Rose Nauman | 52 | Sister | Bookkeeper | Missouri |
| 3 | Caroline Knight | 54 | Roomer | None | California |
| 4 | Arthur Vandervort | 50 | Head | None | New York |
| 5 | Fredrick F Vandervort | 32 | Son | Operator | Pennsylvania |
| 6 | Leo Vandervort | 30 | Son | Conductor | Pennsylvania |
| 7 | Joseph A Vandervort | 21 | Son | Operator | Pennsylvania |
| 8 | James Vandervort | 14 | Son | Janitor | Pennsylvania |
| 9 | Theresa Vandervort | 17 | Daughter | None | Pennsylvania |
| 10 | Edith Vandervort | 6 | Daughter | None | California |
| 11 | Clara Vandervort | 5 | Daughter | None | California |
| 12 | Mary I Black | 25 | Daughter | None | Pennsylvania |
| 13 | Alice Black | 5 | Granddaughter | None | California |
| 14 | Matthew F Brady | 50 | Head | Superintendent | California |
| 15 | Lillian M Brady | 42 | Wife | None | California |
| 16 | Annie M Knotts | 60 | Mother-in-law | None | California |
| 17 | Benjamin Martin | 46 | Head | Laborer | New Jersey |
| 18 | Agnes Martin | 38 | Wife | None | Montana |
| 19 | Lucile Martin | 14 | Daughter | None | Montana |
| 20 | Francis Martin | 42 | Brother | Steel Worker | Canada English |
| 21 | Anna Sullivan | 67 | Mother-in-law | None | England |
| 22 | Earl Sullivan | 27 | Brother-in-law | Plumber | Montana |
| 23 | George B Sullivan | 37 | Brother-in-law | Janitor | Montana |
| 24 | Elizabeth Sullivan | 17 | Niece | None | Montana |
| 25 | Joseph M Silver | 57 | Head | Clerk | California |
| 26 | Theodore Silver | 51 | Brother | None | California |
| 27 | Mitchell A Hennessy | 52 | Roomer | Janitor | Ireland Northern |
| 28 | Ellen Wells | 50 | Head | Yes | California |
| 29 | George F Wells | 27 | Son | Sawfiler | California |
| 30 | Evelyn Wells | 24 | Daughter | Stenographer | Colorado |
| 31 | Ellen G Wells | 19 | Daughter | Bookkeeper | California |
| 32 | David Johnston | 32 | Head | Salesman | Wisconsin |
| 33 | Bernice M Johnston | 26 | Wife | Stenographer | California |
| 34 | Cherie M Johnston | 4 | Daughter | None | California |
| 35 | James E Campbell THIS PERSON | 66 | Head | None | California |
| 36 | James B Campbell | 26 | Son | Chauffeur | California |
| 37 | John J Campbell | 22 | Son | Clerk | California |
| 38 | Debra L Johnson | 27 | Daughter | None | California |
| 39 | Lawrence G Johnson | 30 | Son-in-law | Salesman | California |
| 40 | Lawrence G Jr Johnson | 0 | Grandson | None | California |
| 41 | Albert Cheetham | 53 | Head | Conductor | England |
| 42 | Thomas Cheetham | 20 | Son | Salesman | California |
| 43 | Maurice Dazani | 58 | Head | Laborer | France |
| 44 | Felice Dazani | 44 | Wife | None | France |
| 45 | Raymond Gilmore | 24 | Head | Motorman | California |
| 46 | Lillian V Gilmore | 24 | Wife | None | Minnesota |
| 47 | Betty L Gilmore | 4 | Daughter | None | California |
| 48 | David E L Gilmore | 1 | Son | None | California |
| 49 | Evelyn Dougherty | 22 | Cousin | Stenographer | California |
| 50 | William J Bressler | 44 | Head | Machinist | California |
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)