RC
Robert Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Washington
Our Model Tree links this Robert Cook across the 1910, 1920, 1930 and 1940 US Censuses in Jefferson-County, Washington (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 3-person household.
Age 63
b. ~1877
Male
Head
Born: Canada
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Washington |
| Surname | Cook |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Canada |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Jefferson |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Janitor |
| Industry | County Court House |
| Class of Worker | GW |
| Hours Worked | 16 |
| Income (1939) | 1318 |
| Highest Grade | No 7 |
| 1935 Residence | Washington |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
| Occupation | Janitor |
| Township / Ward | Port Townsend |
| Est. Birth Year | ~1877 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Cook | Head | — | 63 | ~1877 |
| Sam Cook | Son | — | 20 | ~1920 |
| Emma Cook | Spouse | — | 57 | ~1883 |
Census Appearances
1910
Jefferson, Washington
Head, age 35
Jefferson, Washington · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Canada |
| Years Married | 10 |
| Year of Immigration | 1895 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Occupation | Hook tender |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1920
Jefferson, Washington
Head, age 44
Jefferson, Washington · implied b. ~1876 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Canada |
| Year of Immigration | 1883 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Occupation | Farmer |
| Industry | Dairy Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1930
Jefferson, Washington
Head, age 54
Jefferson, Washington · implied b. ~1876 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Canada |
| Naturalization Status | Naturalized |
| Year of Immigration | 1874 |
| Age at First Marriage | 24 |
| Father's Birthplace | Canada E |
| Mother's Birthplace | Canada E |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Veteran | No |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1940
Jefferson-County, Washington
Head, age 63
Jefferson-County, Washington · implied b. ~1877 — 3 household members
| Surname | Cook |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Canada |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Jefferson |
| Naturalization Status | Naturalized |
| Occupation | Janitor |
| Industry | County Court House |
| Class of Worker | GW |
| Hours Worked | 16 |
| Income (1939) | 1318 |
| Highest Grade | No 7 |
| 1935 Residence | Washington |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
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 Robert Cook across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Cook
Head · 1940 · age 63 · b. ~1877 · Washington
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Jefferson-County, Washington
Open full size
1940 US Federal Census — Jefferson-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04342-00454)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Neil A. Kearsley | 35 | Head | No | Sweden |
| 2 | Johanna Kearsley | 67 | Wife | No | Sweden |
| 3 | George Kearsley | 47 | Son | Papermaker | Washington |
| 4 | John J. Kearsley | 29 | Head | Digester | Washington |
| 5 | Alice Kearsley | 28 | Wife | No | Idaho |
| 6 | Lorraine Kearsley | 8 | Daughter | — | Washington |
| 7 | Melva Kearsley | 6 | Daughter | — | Washington |
| 8 | John Jr. Kearsley | 5 | Son | — | Washington |
| 9 | Robert Cook THIS PERSON | 63 | Head | Janitor | Canada |
| 10 | Emma Cook | 57 | Wife | No | Washington |
| 11 | Sam Cook | 20 | Son | Laborer | Washington |
| 12 | Clarence J. Chaussee | 31 | Head | Bargeman | Washington |
| 13 | Jean Chaussee | 28 | Wife | No | Washington |
| 14 | Donna Chaussee | 8 | Daughter | — | Washington |
| 15 | Helen Chaussee | 3 | Daughter | — | Washington |
| 16 | Clarence Jr. Chaussee | 1 | Son | — | Washington |
| 17 | John H. Seidenbaum | 47 | Head | Log Buyer | Washington |
| 18 | Irene Seidenbaum | 42 | Wife | No | Washington |
| 19 | John Jr. Seidenbaum | 11 | Son | — | Washington |
| 20 | Anson W. Draley | 60 | Head | Retired | Iowa |
| 21 | Vella Draley | 61 | Wife | No | Ohio |
| 22 | Virgil Miller | 30 | Head | Machine Helper | Washington |
| 23 | Gertrude Miller | 30 | Wife | No | Montana |
| 24 | Margaret Miller | 7 | Daughter | — | Washington |
| 25 | Marvin Miller | 5 | Son | — | Washington |
| 26 | Richard Miller | 4 | Son | — | Washington |
| 27 | Frances Miller | 0 | Son | — | Washington |
| 28 | Cecil Brown | 32 | Head | Sawyer | Washington |
| 29 | Mary Brown | 29 | Wife | No | Washington |
| 30 | Bernice Brown | 5 | Daughter | — | Washington |
| 31 | Patricia Brown | 4 | Daughter | — | Washington |
| 32 | Carl Otberg | 76 | Head | Proprietor | Norway |
| 33 | Lillie Otberg | 61 | Wife | No | Norway |
| 34 | Simion Humphrey | 35 | Head | Chief Quarter Master | Georgia |
| 35 | Dorothy Humphrey | 33 | Wife | No | Maryland |
| 36 | Florence Humphrey | 12 | Daughter | — | Washington |
| 37 | Harold Humphrey | 10 | Son | — | Connecticut |
| 38 | Russell Bales | 41 | Head | Machine Hand | Wisconsin |
| 39 | Clara Bales | 36 | Wife | No | Wisconsin |
| 40 | Pamela Bales | 3 | Daughter | — | Washington |
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)