RC
Ruth Cox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, California
Our Model Tree links this Ruth Cox across the 1930 and 1940 US Censuses in Lake-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 11-person household.
Age 45
b. ~1895
Female
Spouse
Born: Texas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, California |
| Surname | Cox |
| Given Name | Ruth M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | 3rd District |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | 3Rd District |
| Est. Birth Year | ~1895 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Jim Cox | Son | — | 5 | ~1935 |
| Virginia Cox | Daughter | — | 16 | ~1924 |
| Ruth Cox | Spouse | — | 45 | ~1895 |
| Charles Cox | Head | — | 52 | ~1888 |
| Barney Cox | Son | — | 21 | ~1919 |
| Marie Cox | Daughter | — | 13 | ~1927 |
| Ruth Cox | Daughter | — | 2 | ~1938 |
| Minnie Cox | Daughter | — | 23 | ~1917 |
| Clash Cox | Son | — | 15 | ~1925 |
| Lee Cox | Son | — | 9 | ~1931 |
| Mabel Cox | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Lake, California
Spouse, age 34
Lake, California · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Ruth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Texas |
| Age at First Marriage | 20 |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Lake-County, California
Spouse, age 45
Lake-County, California · implied b. ~1895 — 11 household members
| Surname | Cox |
| Given Name | Ruth M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | 3rd District |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Ruth Cox across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruth Cox
Spouse · 1940 · age 45 · b. ~1895 · 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 — Lake-County, California
Open full size
1940 US Federal Census — Lake-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00218-00120)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Milton Middleton | 25 | Head | Lookout Fireman | California |
| 42 | Ida Middleton | 25 | Wife | — | Utah |
| 43 | Carl L. Middleton | 1 | Son | — | California |
| 44 | Jack Mckay | 58 | Head | Steam Engineer | California |
| 45 | Ethel Mckay | 55 | Wife | — | Iowa |
| 46 | Marian Mckay | 15 | Granddaughter | — | California |
| 47 | Claire R. Dodge | 29 | Head | Manager | California |
| 48 | Nadine Dodge | 26 | Wife | — | California |
| 49 | Mary Diane Dodge | 3 | Daughter | — | California |
| 50 | Addie A. Keeper | 71 | Head | Manager | California |
| 51 | Carlton C. Keeper | 38 | Son | Assistant | California |
| 52 | Laura M. Emerson | 68 | Head | Manager | California |
| 53 | Carl Marston | 40 | Son-in-law | Laborer | California |
| 54 | Marie Marston | 31 | Daughter | — | California |
| 55 | Dorothy Marston | 12 | Granddaughter | — | California |
| 56 | Charles H. Cox | 52 | Head | Farmer | Texas |
| 57 | Ruth M. Cox THIS PERSON | 45 | Wife | — | Texas |
| 58 | Minnie G. Cox | 23 | Daughter | Operator | New Mexico |
| 59 | Barney B. Cox | 21 | Son | — | New Mexico |
| 60 | Virginia M. Cox | 16 | Daughter | — | New Mexico |
| 61 | Clash C. Cox | 15 | Son | — | New Mexico |
| 62 | Marie M. Cox | 13 | Daughter | — | New Mexico |
| 63 | Mabel N. Cox | 10 | Daughter | — | New Mexico |
| 64 | Lee F. Cox | 9 | Son | — | California |
| 65 | Jim W. Cox | 5 | Son | — | California |
| 66 | Ruth M. Cox | 2 | Daughter | — | California |
| 67 | Leonard S. Alley | 47 | Head | Farmer | California |
| 68 | Margaret Alley | 42 | Wife | — | New York |
| 69 | Maude C. Lyman | 70 | Head | Manager | California |
| 70 | Roy Gustine Scott | 53 | Head | Cattle Herder | Ohio |
| 71 | Herbert Meyer | 35 | Head | Farmer | Germany |
| 72 | Carl Simons | 56 | Head | Laborer | Michigan |
| 73 | Josephine E. Simons | 50 | Wife | — | California |
| 74 | Charles J. Simons | 30 | Son | Laborer | California |
| 75 | Dorothy L. Simons | 27 | Daughter-in-law | — | California |
| 76 | Claud B. Simons | 51 | Head | Laborer | Michigan |
| 77 | Belle Josephine Simons | 37 | Wife | — | California |
| 78 | William D. Montgomery | 70 | Head | Laborer | California |
| 79 | Oscar Meeds | 54 | Head | Manager | Washington |
| 80 | Albert Barley | 55 | Partner | Carpenter | Iowa |
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)