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Alice Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Contra-Costa-County, California
Our Model Tree links this Alice Johnston across the 1930 and 1940 US Censuses in Contra-Costa-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Female
Spouse
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Contra-Costa-County, California |
| Surname | Johnston |
| Given Name | Alice C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Fourth Township |
| 1935 Residence (County) | Contra Costa |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Fourth Township |
| Est. Birth Year | ~1909 |
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 1940 census.
| Name | Relation to head | Relative to Alice | Age | Birth yr |
|---|---|---|---|---|
| Alice Johnston | Spouse | — | 31 | ~1909 |
| Alice Johnston | Daughter | — | 3 | ~1937 |
| Benton Johnston | Son | — | 12 | ~1928 |
| Norman Johnston | Son | — | 4 | ~1936 |
| Leo Johnston | Son | — | 13 | ~1927 |
| Leo Johnston | Head | — | 38 | ~1902 |
Census Appearances
1930
Contra Costa, …
Spouse, age 21
Contra Costa, California · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Alice |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 17 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Spouse, age 31
Contra-Costa-County, California · implied b. ~1909 — 6 household members
| Surname | Johnston |
| Given Name | Alice C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Fourth Township |
| 1935 Residence (County) | Contra Costa |
| Highest Grade | Hs 2 |
| 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 Alice Johnston across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Alice Johnston
Spouse · 1940 · age 31 · b. ~1909 · 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 — 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-t0627-00197-00290)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Melvin C. Call | 44 | Head | Janitor Building | Utah |
| 42 | Dorothy A. Miller | 35 | Head | Welder | Nebraska |
| 43 | Cornelius L. Hughes | 35 | Head | Engineer | Washington |
| 44 | Elsie M. Gates | 21 | Head | Waitress | Kansas |
| 45 | Charles E. Henritze | 44 | Head | Welder | Missouri |
| 46 | Knut Brumstad | 45 | Head | Carpenter | Norway |
| 47 | Ray G. Pager | 30 | Head | Engineer | California |
| 48 | Charles G. Miller | 51 | Head | Roustabout | California |
| 49 | George B. Greder | 44 | Head | Janitor Building | Nebraska |
| 50 | Walter H. Ross | 53 | Head | Sr Engineer | California |
| 51 | Irene M. Ross | 49 | Wife | — | California |
| 52 | Darwin Ross | 23 | Son | Operator | California |
| 53 | Ida W. Ross | 23 | Daughter | Secretary | California |
| 54 | Ed Holcomb | 36 | Head | Truck Driver | Arkansas |
| 55 | Arthur B. Williams | 34 | Head | Electrician | Indiana |
| 56 | Celia Williams | 33 | Wife | — | Michigan |
| 57 | Thomas Williams | 11 | Son | — | California |
| 58 | Robert Williams | 9 | Son | — | California |
| 59 | Priscilla Williams | 2 | Daughter | — | California |
| 60 | James E. Draper | 36 | Head | Salesman | Texas |
| 61 | Edna F. Draper | 33 | Wife | — | California |
| 62 | Edna L. Draper | 7 | Daughter | — | Spain |
| 63 | James E. Jr. Draper | 5 | Son | — | California |
| 64 | Ellenlin Draper | 2 | Son | — | California |
| 65 | Leo R. Johnston | 38 | Head | Kettleman | Montana |
| 66 | Alice C. Johnston THIS PERSON | 31 | Wife | — | California |
| 67 | Leo Jr. Johnston | 13 | Son | — | California |
| 68 | Benton Johnston | 12 | Son | — | California |
| 69 | Norman Johnston | 4 | Son | — | California |
| 70 | Alice Marie Johnston | 3 | Daughter | — | California |
| 71 | Antone Vargas | 33 | Head | Salesman | California |
| 72 | Cleo Vargas | 25 | Wife | — | Utah |
| 73 | Alexander J. Samstag | 64 | Head | — | California |
| 74 | Pauline Samstag | 67 | Wife | — | California |
| 75 | Tony Francia | 34 | Head | Oil Worker | California |
| 76 | Martha Pittman | 28 | Friend | Waitress | North Dakota |
| 77 | Louis A. Francia | 28 | Head | Laborer | California |
| 78 | Kathleen J. Francia | 20 | Wife | — | California |
| 79 | Valerios Calsherinos | 52 | Head | Farmer | Greece |
| 80 | Caliope Calsherinos | 42 | Wife | — | Greece |
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)