RS
Ronald Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marin-County, California
Our Model Tree links this Ronald Smith across the 1930 and 1940 US Censuses in Marin-County, California (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 5-person household.
Age 48
b. ~1892
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marin-County, California |
| Surname | Smith |
| Given Name | Ronald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | San Francisco |
| Additional Details | |
| Occupation | Adjuster |
| Industry | Insurance |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | C 6 |
| 1935 Residence | California |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Adjuster |
| Township / Ward | Tamalpais Valley |
| Est. Birth Year | ~1892 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ronald | Age | Birth yr |
|---|---|---|---|---|
| Ronald Smith | Head | — | 48 | ~1892 |
| Hettie Sanders | Other | — | 70 | ~1870 |
| John Smith | Son | — | 12 | ~1928 |
| Edna Smith | Spouse | — | 51 | ~1889 |
| Jane Smith | Daughter | — | 23 | ~1917 |
Census Appearances
1930
San Francisco, …
Head, age 37
San Francisco, California · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Ronald J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 30 |
| Father's Birthplace | California |
| Mother's Birthplace | West Virginia |
| Occupation | Adjuster |
| Industry | Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 10000 |
| Radio Set | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Marin-County, California
Head, age 48
Marin-County, California · implied b. ~1892 — 5 household members
| Surname | Smith |
| Given Name | Ronald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | San Francisco |
| Occupation | Adjuster |
| Industry | Insurance |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | C 6 |
| 1935 Residence | California |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Ronald Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ronald Smith
Head · 1940 · age 48 · b. ~1892 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marin-County, California
Open full size
1940 US Federal Census — Marin-County, California
Page Contents
20 people indexed on this census page (nara:1940:m-t0627-00262-00652)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothea Niemann | 51 | Head | Nurse | Germany |
| 42 | Charles Niemann | 51 | Son | — | Germany |
| 43 | Nanny Ward | 67 | Head | — | Mississippi |
| 44 | Myrtle Risum | 57 | Head | Helper | South Dakota |
| 45 | William Anderson | 36 | Head | Appraiser | Washington |
| 46 | Isabella Anderson | 36 | Wife | — | Michigan |
| 47 | Laura Anderson | 14 | Daughter | — | California |
| 48 | John Anderson | 64 | Head | Carpenter | Illinois |
| 49 | William Bale | 32 | Head | Artist | Illinois |
| 50 | Ruth Bale | 28 | Wife | — | Illinois |
| 51 | William Dunbar | 21 | Brother in law | Helper | Illinois |
| 52 | Edward Christian | 26 | Head | Fireman | California |
| 53 | Florence Christian | 30 | Wife | — | Arkansas |
| 54 | Ronald Smith THIS PERSON | 48 | Head | Adjuster | Kansas |
| 55 | Edna Smith | 51 | Wife | — | Pennsylvania |
| 56 | Jane Smith | 23 | Daughter | — | Colorado |
| 57 | John Smith | 12 | Son | — | California |
| 58 | Hettie Sanders | 70 | Mother in law | — | New York |
| 59 | Howard Bushnell | 60 | Head | — | Virginia |
| 60 | Lillian Belle | 68 | Head | — | California |
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)