MS
Mary Silva — 1940 US Census Record
Model Tree available1940 United States Federal Census · Contra-Costa-County, California
Our Model Tree links this Mary Silva across the 1920, 1930 and 1940 US Censuses in Contra-Costa-County, California (XGBoost, ~Confirmed), with identified parents Ross — first a daughter (b.~1885), then head of a 3-person household.
Age 55
b. ~1885
Female
Daughter
Born: Azores Islands
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Contra-Costa-County, California |
| Surname | Silva |
| Given Name | Mary N. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Azores Islands |
| 1935 Residence (City) | Judicial Twp 14 |
| 1935 Residence (County) | Contra Costa |
| Naturalization Status | Alien |
| Additional Details | |
| Occupation | Cook |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 450 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birthplace (normalized) | azores islands |
| Occupation | Cook |
| Township / Ward | Judicial Twp 14 |
| Est. Birth Year | ~1885 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Silva | Daughter | — | 55 | ~1885 |
| Mildred Silva | Daughter | — | 20 | ~1920 |
| Ross Cearnes | Head | — | 29 | ~1911 |
Census Appearances
1920
Marin, California
Spouse, age 35
Marin, California · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Silva |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Azores Islands |
| Father's Birthplace | Azores Islands |
| Mother's Birthplace | Azores Islands |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Portuguese |
| Birthplace (normalized) | azores islands |
1930
Monterey, California
Spouse, age 44
Monterey, California · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Silva |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Azores Islands |
| Naturalization Status | Alien |
| Year of Immigration | 1901 |
| Age at First Marriage | 20 |
| Father's Birthplace | Azores Islands |
| Mother's Birthplace | Azores Islands |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birthplace (normalized) | azores islands |
1940
Contra-Costa-County, California
Daughter, age 55
Contra-Costa-County, California · implied b. ~1885 — 3 household members
| Surname | Silva |
| Given Name | Mary N. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Azores Islands |
| 1935 Residence (City) | Judicial Twp 14 |
| 1935 Residence (County) | Contra Costa |
| Naturalization Status | Alien |
| Occupation | Cook |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 450 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birthplace (normalized) | azores islands |
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 Mary Silva across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Ross Cearnes (~0.50 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.5
Father
Ross Cearnes
b. ~1911
Source father
● Household
· direct · ~0.5
This person
Anchor record
Mary Silva
Daughter · 1940 · age 55 · b. ~1885 · California
★ You are viewing this record
Sibling
Mildred Silva
Sibling · 1940 · age 20
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-t0627-00197-00678)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irene E. Turner | 16 | Daughter | — | Oklahoma |
| 2 | Attie C. Hardin | 36 | Boarder | Labor | Texas |
| 3 | Edward G. Kirby | 24 | Head | Laborer | Arkansas |
| 4 | George W. Daniel | 54 | Head | Laborer | Missouri |
| 5 | Reese E. Morris | 46 | Head | Laborer | Louisiana |
| 6 | Frank P. Roquel | 55 | Head | Foreman | Same Place |
| 7 | Albert Richards | 29 | Head | Laborer | West Virginia |
| 8 | Hershel Haley | 35 | Head | Laborer | Alabama |
| 9 | Ross L. Cearnes | 29 | Head | Laborer | Texas |
| 10 | Mary N. Silva THIS PERSON | 55 | Daughter | Cook | Azores Islands |
| 11 | Mildred P. Silva | 20 | Daughter | — | Massachusetts |
| 12 | Maria R. Borba | 60 | Head | — | Azores Islands |
| 13 | Henry R. Borba | 31 | Son | Laborer | California |
| 14 | Manuel J. Borba | 21 | Son | — | California |
| 15 | Alice C. Borba | 20 | Daughter | — | California |
| 16 | Larry A. Mikkelsen | 1 | Son | — | California |
| 17 | Warren W. Martins | 16 | Son | — | California |
| 18 | Joe P. Silveira | 23 | Head | Laborer | California |
| 19 | Evelyn A. Silveira | 22 | Wife | — | California |
| 20 | Arthur Silveira | 2 | Son | — | California |
| 21 | Arthur Alice Silveira | 0 | Daughter | — | California |
| 22 | Helen A. Richardson | 56 | Head | Operator | California |
| 23 | Mary H. Richardson | 58 | Wife | — | California |
| 24 | Donna Mcanally | None | Extra line | — | — |
| 25 | Elizabeth Ready | None | Extra line | — | — |
| 26 | Joe M. Gomez | 39 | Head | Laborer | Azores Islands |
| 27 | Cecelia Gomez | 29 | Wife | — | Hawaii |
| 28 | Bernadine M. Gomez | 8 | Daughter | — | California |
| 29 | Juanita E. Steffens | 28 | Head | Teacher | California |
| 30 | Jack Addington | 30 | Head | Laborer | Oklahoma |
| 31 | Delphine L. Addington | 22 | Wife | — | Arkansas |
| 32 | Tony Rosa | 8 | Son | — | California |
| 33 | Jesse C. Addington | 21 | Son | Laborer | Oklahoma |
| 34 | James S. Addington | 18 | Son | Laborer | Oklahoma |
| 35 | Johnie E. Addington | 14 | Son | — | Oklahoma |
| 36 | Dorothy G. Simmons | 3 | Daughter | — | California |
| 37 | John F. Perry | 44 | Head | Dairyman | Azores Islands |
| 38 | Isabel M. Perry | 33 | Wife | — | California |
| 39 | Adelina A. Perry | 13 | Daughter | — | California |
| 40 | Laura M. Perry | 11 | Daughter | — | California |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 1 parents
~0.5
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)