WC
Walter Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Diego-County, California
Our Model Tree links this Walter Cook across the 1920, 1930 and 1940 US Censuses in San-Diego-County, California (XGBoost, ~Confirmed), with identified parents Walter & Lillie — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Diego-County, California |
| Surname | Cook |
| Given Name | Walter W. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Diego |
| 1935 Residence (County) | San Diego |
| Additional Details | |
| Occupation | Truck driver |
| Industry | Road Concern |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 911 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Truck Driver |
| Township / Ward | San Diego |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Meryl Cook | Daughter | — | 15 | ~1925 |
| Lillie Cook | Spouse | — | 56 | ~1884 |
| Walter Cook | Head | — | 66 | ~1874 |
| Walter Cook | Son | — | 22 | ~1918 |
| Rena Cook | Daughter | — | 21 | ~1919 |
Census Appearances
1920
San Diego, …
Son, age 2
San Diego, California · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Walter V. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Washington |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Diego, …
Son, age 12
San Diego, California · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Walter V. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Washington |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Son, age 22
San-Diego-County, California · implied b. ~1918 — 5 household members
| Surname | Cook |
| Given Name | Walter W. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Diego |
| 1935 Residence (County) | San Diego |
| Occupation | Truck driver |
| Industry | Road Concern |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 911 |
| Highest Grade | Hs 4 |
| 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 Walter Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Walter Cook (~0.92 confidence) and mother Lillie Cook (~0.92 confidence) and mother Lillie Cook (~0.92 confidence) and mother Nellie Cook (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Walter Cook
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Lillie Cook
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Lillie Cook
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Nellie Cook
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Cook
Son · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
Sibling
Rena Cook
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Meryl Cook
Sibling · 1940 · age 15
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 — San-Diego-County, California
Open full size
1940 US Federal Census — San-Diego-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00451-00602)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clement A. Linley | 37 | Head | Shipper | Minnesota |
| 42 | Elisa F. Linley | 33 | Wife | Bookkeeper | Illinois |
| 43 | Wayne Linley | 12 | Son | — | California |
| 44 | Marjorie Numbers | 61 | Mother | — | Minnesota |
| 45 | Caro B. Marshall | 67 | Head | — | Illinois |
| 46 | Val Dage | 42 | Head | Wooding Tell. | Michigan |
| 47 | Mary D. Dage | 38 | Wife | Saleslady | Illinois |
| 48 | Virginia Dage | 15 | Daughter | — | Illinois |
| 49 | Alma Beautry | 27 | Lodger | Saleslady | Colorado |
| 50 | Alex H. Walters | 50 | Head | Boarding House | Idaho |
| 51 | Dale Walters | 16 | Son | — | California |
| 52 | Glen Ludman | None | Lodger | — | California |
| 53 | Beverley Ludman | 5 | Lodger | — | California |
| 54 | Robert Miller | 4 | Lodger | — | Washington |
| 55 | Franklin Boggeman | 2 | Lodger | — | California |
| 56 | Gregg Wilder | 2 | Lodger | — | California |
| 57 | Ben Walsh | 46 | Head | — | Wisconsin |
| 58 | Lillian Walsh | 46 | Wife | — | Massachusetts |
| 59 | Ben Jr. Walsh | 12 | Son | — | California |
| 60 | Dorothy Walsh | 10 | Daughter | — | California |
| 61 | Wayne W. Wood | 58 | Head | Navy Retired | Iowa |
| 62 | Julia L. Wood | 52 | Wife | — | Washington |
| 63 | Russell C. Thurrott | 33 | Head | Payclerk | Connecticut |
| 64 | Lenore J. Thurrott | 30 | Wife | — | Oregon |
| 65 | Lavanne Neill | 80 | Head | — | Illinois |
| 66 | Addie Nossaman | 75 | Lodger | — | Illinois |
| 67 | Archie L. Franklin | 56 | Head | Proprietor | Nevada |
| 68 | Maud Franklin | 56 | Wife | Bookkeeper | Ohio |
| 69 | Lois Franklin | 26 | Daughter | Musician | Ohio |
| 70 | Martha H. Franklin | 92 | Mother | — | Illinois |
| 71 | Walter W. Cook | 66 | Head | Printer | California |
| 72 | Lillie J. Cook | 56 | Wife | — | Washington |
| 73 | Walter W. Jr. Cook THIS PERSON | 22 | Son | Truck Driver | California |
| 74 | Rena E. Cook | 21 | Daughter | Saleslady | California |
| 75 | Meryl D. Cook | 15 | Daughter | — | California |
| 76 | Arthur Heyer | 51 | Head | Plumber | California |
| 77 | Annie Heyer | 75 | Mother | — | Minnesota |
| 78 | Agnes M. Berlin | 51 | Head | Proprietor | Pennsylvania |
| 79 | Rose Berlin | 71 | Lodger | — | Louisiana |
Related Census Records
Pedigree Summary
Walter + 2 siblings
Gen 1 · 4 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)