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John Murdock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Riverside-County, California
Our Model Tree links this John Murdock across the 1930 and 1940 US Censuses in Riverside-County, California (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Riverside-County, California |
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Palo Verde Twp |
| 1935 Residence (County) | Riverside |
| Additional Details | |
| Occupation | Student |
| Industry | School |
| Class of Worker | Np |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Student |
| Township / Ward | Palo Verde Twp |
| Est. Birth Year | ~1920 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Clyde Murdock | Son | — | 17 | ~1923 |
| Lizzie Murdock | Spouse | — | 46 | ~1894 |
| Betty Murdock | Daughter | — | 14 | ~1926 |
| Sanford Murdock | Son | — | 9 | ~1931 |
| Earl Murdock | Head | — | 52 | ~1888 |
| John Murdock | Son | — | 20 | ~1920 |
| Donnie Murdock | Son | — | 5 | ~1935 |
| Lorenzo Murdock | Son | — | 12 | ~1928 |
Census Appearances
1930
Riverside, California
Son, age 10
Riverside, California · implied b. ~1920 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Texas |
| Can Read/Write | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Riverside-County, California
Son, age 20
Riverside-County, California · implied b. ~1920 — 8 household members
| Surname | Murdock |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Palo Verde Twp |
| 1935 Residence (County) | Riverside |
| Occupation | Student |
| Industry | School |
| Class of Worker | Np |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 John Murdock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Murdock
Son · 1940 · age 20 · b. ~1920 · California
★ You are viewing this record
Sibling
Clyde Murdock
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Murdock
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donnie Murdock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sanford Murdock
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorenzo Murdock
Sibling · 1940 · age 12
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 — Riverside-County, California
Open full size
1940 US Federal Census — Riverside-County, California
Page Contents
20 people indexed on this census page (nara:1940:m-t0627-00277-00342)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mable Jackson | 10 | Daughter | — | California |
| 2 | Dora Jackson | 8 | Son | — | California |
| 3 | Henry Jackson | 4 | Son | — | California |
| 4 | Lou Della Jackson | 2 | Daughter | — | California |
| 5 | Willie Mae Jackson | 0 | Daughter | — | California |
| 6 | Emmet L. Yarrow | 40 | Head | Farmer | California |
| 7 | Thelma P. Yarrow | 34 | Wife | — | Texas |
| 8 | Clyde Wofford | 13 | Boarder | — | Texas |
| 9 | Alfred L. Freeman | 73 | Head | 52 | Texas |
| 10 | Annie Freeman | 63 | Wife | Housewife | California |
| 11 | Oliver Vincent | 59 | Head | 54 | Texas |
| 12 | Edwin Williams | 73 | Head | — | Iowa |
| 13 | Earl Murdock | 52 | Head | 40 | Alabama |
| 14 | Lizzie Murdock | 46 | Wife | — | Texas |
| 15 | John Murdock THIS PERSON | 20 | Son | Student | Oklahoma |
| 16 | Clyde Murdock | 17 | Son | Student | Oklahoma |
| 17 | Betty June Murdock | 14 | Daughter | Student | Oklahoma |
| 18 | Lorenzo Murdock | 12 | Son | Student | Oklahoma |
| 19 | Sanford Murdock | 9 | Son | — | California |
| 20 | Donnie Murdock | 5 | Son | — | 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)