RE
Richard Evans — 1940 US Census Record
Model Tree available1940 United States Federal Census · Contra-Costa-County, California
Our Model Tree links this Richard Evans across the 1920, 1930 and 1940 US Censuses in Contra-Costa-County, California (XGBoost, ~Confirmed), with identified parents Richard & Margaret — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Contra-Costa-County, California |
| Surname | Evans |
| Given Name | Richard J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Crockett |
| 1935 Residence (County) | Contra Costa |
| Additional Details | |
| Occupation | Artist Comm |
| Industry | Advertising Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1242 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Artist Comm |
| Township / Ward | Crockett |
| Est. Birth Year | ~1915 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| Richard Evans | Son | — | 25 | ~1915 |
| Richard Evans | Head | — | 57 | ~1883 |
| Edward Evans | Son | — | 26 | ~1914 |
| Margaret Evans | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Contra Costa, …
Son, age 5
Contra Costa, California · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Evans |
| Given Name | Richard J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Contra Costa, …
Son, age 15
Contra Costa, California · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Evans |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Son, age 25
Contra-Costa-County, California · implied b. ~1915 — 4 household members
| Surname | Evans |
| Given Name | Richard J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Crockett |
| 1935 Residence (County) | Contra Costa |
| Occupation | Artist Comm |
| Industry | Advertising Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1242 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Richard Evans across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Richard Evans (~0.92 confidence) and mother Margaret Evans (~0.92 confidence) and mother Margaret Evans (~0.92 confidence) and father Richard Evans (~0.92 confidence) and mother Margaret Evans (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Richard Evans
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Margaret Evans
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Margaret Evans
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Richard Evans
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Margaret Evans
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Richard Evans
Son · 1940 · age 25 · b. ~1915 · California
★ You are viewing this record
Sibling
Edward Evans
Sibling · 1940 · age 26
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 — Contra-Costa-County, California
Open full size
1940 US Federal Census — Contra-Costa-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00197-00547)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Manuel Azevedo | 71 | Head | — | Azores |
| 2 | Maria Azevedo | 71 | Wife | — | Azores |
| 3 | Balde Green | 37 | Son-in-law | Carpenter | California |
| 4 | Mamie Green | 37 | Daughter | — | Massachusetts |
| 5 | Shirley Green | 11 | Granddaughter | — | California |
| 6 | Garry Green | 4 | Grandson | — | California |
| 7 | Louis Franchiotti | 68 | Head | — | Italy |
| 8 | Christina Franchiotti | 64 | Wife | — | Italy |
| 9 | Fred Heckman | 35 | Son-in-law | Shift Superintendent | California |
| 10 | Alba Heckman | 35 | Daughter | — | Illinois |
| 11 | Paul Heckman | 5 | Grandson | — | California |
| 12 | Bernard Martignoni | 51 | Head | Rigger | Italy |
| 13 | Marie Martignoni | 48 | Wife | — | Italy |
| 14 | Charles Martignoni | 17 | Son | — | California |
| 15 | Angelo Martignoni | 13 | Son | — | California |
| 16 | John E. Jones | 70 | Head | — | Wales |
| 17 | Annie Jones | 56 | Wife | — | Wales |
| 18 | Charles Gothrup | 65 | Lodger | Sugar Worker | West Virginia |
| 19 | James Lucey | 68 | Head | — | Ireland South |
| 20 | Margaret Lucey | 66 | Wife | — | California |
| 21 | Richard Evans | 57 | Head | Power House Engineer | Wales England |
| 22 | Margaret Evans | 56 | Wife | — | Wales England |
| 23 | Edward David Evans | 26 | Son | Elect Engineer | California |
| 24 | Richard J. Evans THIS PERSON | 25 | Son | Artist Comm | California |
| 25 | Julio Bartholmie | 31 | Head | Brick Mason | Italy |
| 26 | Mary Bartholmie | 27 | Wife | — | Italy |
| 27 | Julie-Jr Bartholmie | 9 | Son | — | California |
| 28 | Adolph Carlini | 53 | Head | Sugar Worker | Italy |
| 29 | Catherine Carlini | 44 | Wife | — | Italy |
| 30 | Albertan Carlini | 21 | Daughter | String Outer | Illinois |
| 31 | Alma Carlini | 20 | Daughter | Powder Sugar Worker | California |
| 32 | Celia Carlini | 18 | Daughter | — | California |
| 33 | Robert Magnani | 65 | Father-in-law | Blacksmith Helper | Italy |
| 34 | John Stemmele | 53 | Head | Chemist | California |
| 35 | Daisy Stemmele | 45 | Wife | Social Service | Kentucky |
| 36 | Kenneth Stemmele | 23 | Son | — | California |
| 37 | Stanley Keller | 27 | Head | Contractor | California |
| 38 | Eunice Keller | 28 | Wife | Contractor | Iowa |
| 39 | Karl Stanley Keller | 3 | Son | — | California |
| 40 | Katherine Anne Keller | 0 | Daughter | — | California |
Pedigree Summary
Richard + 1 sibling
Gen 1 · 5 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)