WC
William Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knott-County, Kentucky
Our Model Tree links this William Cook across the 1920, 1930 and 1940 US Censuses in Knott-County, Kentucky (XGBoost, ~Confirmed), with identified parents George & Gwinn — first a son (b.~1917), then head of a 11-person household.
Age 23
b. ~1917
Male
Son
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Knott-County, Kentucky |
| Surname | Cook |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial District No 3 |
| 1935 Residence (County) | Knott |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 8 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Magisterial District No 3 |
| Est. Birth Year | ~1917 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Sarah Cook | Daughter | — | 4 | ~1936 |
| Lindie Cook | Daughter | — | 12 | ~1928 |
| George Cook | Head | — | 42 | ~1898 |
| Allie Cook | Other | — | 17 | ~1923 |
| Lew Cook | Son | — | 6 | ~1934 |
| Billie Cook | Son | — | 11 | ~1929 |
| Willie Cook | Son | — | 14 | ~1926 |
| Bobby Cook | Son | — | 2 | ~1938 |
| Johnie Cook | Son | — | 8 | ~1932 |
| William Cook | Son | — | 23 | ~1917 |
| Hulda Cook | Spouse | — | 40 | ~1900 |
Census Appearances
Son, age 3
Knott, Kentucky · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Knott, Kentucky
Son, age 13
Knott, Kentucky · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Knott-County, Kentucky
Son, age 23
Knott-County, Kentucky · implied b. ~1917 — 11 household members
| Surname | Cook |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial District No 3 |
| 1935 Residence (County) | Knott |
| Class of Worker | 0 |
| Hours Worked | 8 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 William Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Cook (~0.92 confidence) and father Gwinn Cook (~0.92 confidence) and father George Cook (~0.92 confidence) and mother Hulda Cook (~0.92 confidence) and mother Hulda Cook (~0.92 confidence) and mother Florence Cook (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Cook
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Gwinn Cook
b. ~1887
Source father
● Household
· direct · ~0.92
Father
George Cook
b. ~1898
Source father
● Household
· direct · ~0.92
Mother
Hulda Cook
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Hulda Cook
b. ~1900
Source mother
● Household
· direct · ~0.92
Mother
Florence Cook
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cook
Son · 1940 · age 23 · b. ~1917 · Kentucky
★ You are viewing this record
Sibling
Bobby Cook
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billie Cook
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Cook
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johnie Cook
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Cook
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lew Cook
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lindie Cook
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 — Knott-County, Kentucky
Open full size
1940 US Federal Census — Knott-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01326-00508)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pearl Cook | 25 | Head | — | Kentucky |
| 42 | Earl Cook | 9 | Grandson | — | Kentucky |
| 43 | Willie Hall | 7 | Grandson | — | Kentucky |
| 44 | Lish Johnson | 77 | Uncle | — | Kentucky |
| 45 | Elesie Cook | 73 | Head | — | Kentucky |
| 46 | Irvin Isaac | 38 | Son | Laborer | Kentucky |
| 47 | Mary Isaac | 37 | Daughter in law | — | Kentucky |
| 48 | Ramil Isaac | 17 | Grandson | — | Kentucky |
| 49 | Ramil Isaac | 15 | Grandson | — | Kentucky |
| 50 | Hamy Isaac | 12 | Granddaughter | — | Kentucky |
| 51 | Raymond Isaac | 9 | Grandson | — | Kentucky |
| 52 | Mamie Isaac | 7 | Granddaughter | — | Kentucky |
| 53 | Ishmael Isaac | 6 | Grandson | — | Kentucky |
| 54 | May Isaac | 2 | Granddaughter | — | Kentucky |
| 55 | Dave Hall | 26 | Head | Farmer | Kentucky |
| 56 | Susanna Hall | 40 | Wife | — | Kentucky |
| 57 | Lamar Hall | 5 | Son | — | Kentucky |
| 58 | Hatine Hall | 3 | Daughter | — | Kentucky |
| 59 | Conly Hall | 1 | Son | — | Kentucky |
| 60 | Ivy Neen Hall | 7 | Daughter | — | Kentucky |
| 61 | Line Hall | 19 | Head | — | Kentucky |
| 62 | Nellie Hall | 17 | Wife | — | Kentucky |
| 63 | George Cook | 42 | Head | Farmer | Kentucky |
| 64 | Hulda Cook | 40 | Wife | — | Kentucky |
| 65 | Willie Cook | 14 | Son | Farm Helper | Kentucky |
| 66 | Lindie Cook | 12 | Daughter | — | Kentucky |
| 67 | Billie Cook | 11 | Son | — | Kentucky |
| 68 | Johnie Cook | 8 | Son | — | Kentucky |
| 69 | Lew Jean Cook | 6 | Son | — | Kentucky |
| 70 | Sarah Jane Cook | 4 | Daughter | — | Kentucky |
| 71 | Bobby Jean Cook | 2 | Son | — | Kentucky |
| 72 | William Cook THIS PERSON | 23 | Son | — | Kentucky |
| 73 | Allie Fair Cook | 17 | Daughter in law | — | Kentucky |
| 74 | Daw Hall | 33 | Head | — | Kentucky |
| 75 | Bertha Hall | 40 | Wife | — | Kentucky |
| 76 | Jesse Mullins | 16 | Step Son | — | Kentucky |
| 77 | Frank Mullins | 15 | Step Son | — | Kentucky |
| 78 | Nancy Hall | 48 | Head | Farmer | Kentucky |
| 79 | Ward Hall | 13 | Daughter | — | Kentucky |
| 80 | James Hall | 10 | Son | — | Kentucky |
Related Census Records
Pedigree Summary
William + 7 siblings
Gen 1 · 6 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)