MC
Mary Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Knott-County, Kentucky
Our Model Tree links this Mary Cook across the 1930 and 1940 US Censuses in Knott-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 12-person household.
Age 12
b. ~1928
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knott-County, Kentucky |
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial District No. 3 |
| 1935 Residence (County) | Knott |
| Additional Details | |
| 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 | ~1928 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cook | Daughter | — | 12 | ~1928 |
| Leslie Cook | Daughter | — | 15 | ~1925 |
| Loretta Cook | Daughter | — | 3 | ~1937 |
| Edith Cook | Daughter | — | 21 | ~1919 |
| Constance Cook | Daughter | — | 8 | ~1932 |
| Dewey Cook | Head | — | 40 | ~1900 |
| Jerry Cook | Son | — | 18 | ~1922 |
| David Cook | Son | — | 17 | ~1923 |
| Huey Cook | Son | — | 2 | ~1938 |
| James Cook | Son | — | 10 | ~1930 |
| Daniel Cook | Son | — | 20 | ~1920 |
| Martha Cook | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Knott, Kentucky
Daughter, age 3
Knott, Kentucky · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Occupation | none |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Knott-County, Kentucky
Daughter, age 12
Knott-County, Kentucky · implied b. ~1928 — 12 household members
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial District No. 3 |
| 1935 Residence (County) | Knott |
| 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 Mary Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cook
Daughter · 1940 · age 12 · b. ~1928 · Kentucky
★ You are viewing this record
Sibling
David Cook
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Constance Cook
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leslie Cook
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Cook
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Huey Cook
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Cook
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Cook
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Cook
Sibling · 1940 · age 20
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-t0627-01326-00502)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | C. M. Truman | 45 | Head | Meter Reader | Kentucky |
| 42 | Laura Truman | 37 | Wife | — | Kentucky |
| 43 | Thelma Truman | 14 | Daughter | — | Kentucky |
| 44 | Velma Truman | 13 | Daughter | — | Kentucky |
| 45 | Virginia Truman | 11 | Daughter | — | Kentucky |
| 46 | Lee Truman | 8 | Son | — | Kentucky |
| 47 | Betty Jo Truman | 5 | Daughter | — | Kentucky |
| 48 | Annetta Truman | 3 | Daughter | — | Kentucky |
| 49 | Calones Caudill | 24 | Head | Laborer | Kentucky |
| 50 | Edna Caudill | 22 | Wife | — | Kentucky |
| 51 | Dewey Cook | 40 | Head | Clerk | Kentucky |
| 52 | Martha I. Cook | 42 | Wife | — | Kentucky |
| 53 | Edith Cook | 21 | Daughter | Housework | Kentucky |
| 54 | Daniel A. B. Cook | 20 | Son | — | Kentucky |
| 55 | Jerry A. B. Cook | 18 | Son | — | Kentucky |
| 56 | David A. B. Cook | 17 | Son | — | Kentucky |
| 57 | Leslie Cook | 15 | Daughter | — | Kentucky |
| 58 | Mary Cook THIS PERSON | 12 | Daughter | — | Kentucky |
| 59 | James Cook | 10 | Son | — | Kentucky |
| 60 | Constance Lucile Cook | 8 | Daughter | — | Kentucky |
| 61 | Loretta Cook | 3 | Daughter | — | Kentucky |
| 62 | Huey P. Cook | 2 | Son | — | Kentucky |
| 63 | Lonnie Isaac | 45 | Head | Mail Carrier | Kentucky |
| 64 | Fancy Isaac | 35 | Wife | — | Kentucky |
| 65 | Hazel Isaac | 16 | Daughter | — | Kentucky |
| 66 | Frankie Isaac | 13 | Daughter | — | Kentucky |
| 67 | Vadie Isaac | 11 | Daughter | — | Kentucky |
| 68 | T. Lindsey | 29 | Head | Laborer | Kentucky |
| 69 | Della Mae Lindsey | 29 | Wife | — | Kentucky |
| 70 | Junior Lindsey | 3 | Son | — | Kentucky |
| 71 | Newberry Hall | 55 | Head | Farmer | Kentucky |
| 72 | Ida Hall | 55 | Wife | — | Kentucky |
| 73 | Frankie Bales | 18 | Daughter | — | Kentucky |
| 74 | Silas Hall | 41 | Head | Farmer | Kentucky |
| 75 | Stella Hall | 32 | Wife | — | Kentucky |
| 76 | Hauler Hall | 11 | Son | — | Kentucky |
| 77 | Cecil Hall | 10 | Son | — | Kentucky |
| 78 | Dalpha Hall | 8 | Son | — | Kentucky |
| 79 | J. M. Hall | 57 | Head | Lawyer | Kentucky |
| 80 | Liasia Hall | 35 | Wife | — | Kentucky |
Related Census Records
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)