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Fred Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rooks-County, Kansas
Our Model Tree links this Fred Cook across the 1920, 1930 and 1940 US Censuses in Rooks-County, Kansas (XGBoost, ~Confirmed), with identified parents J & John — first a son (b.~1893), then head of a 5-person household.
Age 47
b. ~1893
Male
Son
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rooks-County, Kansas |
| Surname | Cook |
| Given Name | Fred H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Ash Rock Township |
| 1935 Residence (County) | Rooks |
| Additional Details | |
| Occupation | Farm |
| Industry | Farm |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Farm |
| Township / Ward | Ash Rock Township |
| Est. Birth Year | ~1893 |
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 Fred | Age | Birth yr |
|---|---|---|---|---|
| Fred Cook | Son | — | 47 | ~1893 |
| John Cook | Head | — | 83 | ~1857 |
| Christina Matejka | Other | — | 70 | ~1870 |
| Carl Cook | Son | — | 42 | ~1898 |
| Josephine Matejka | Other | — | 71 | ~1869 |
Census Appearances
1920
Rooks, Kansas
Son, age 27
Rooks, Kansas · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Fred H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Rooks, Kansas
Son, age 37
Rooks, Kansas · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Fred H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Rooks-County, Kansas
Son, age 47
Rooks-County, Kansas · implied b. ~1893 — 5 household members
| Surname | Cook |
| Given Name | Fred H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Ash Rock Township |
| 1935 Residence (County) | Rooks |
| Occupation | Farm |
| Industry | Farm |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Fred Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Cook (~0.92 confidence) and father John Cook (~0.92 confidence) and father John Cook (~0.92 confidence) and mother Pauline Cook (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Cook
b. ~1857
Source father
● Household
· direct · ~0.92
Father
John Cook
b. ~1857
Source father
● Household
· direct · ~0.92
Father
John Cook
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Pauline Cook
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Fred Cook
Son · 1940 · age 47 · b. ~1893 · Kansas
★ You are viewing this record
Sibling
Carl Cook
Sibling · 1940 · age 42
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 — Rooks-County, Kansas
Open full size
1940 US Federal Census — Rooks-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01256-00636)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Dunlap | 57 | Head | Farm | Kansas |
| 2 | Vera Dunlap | 50 | Wife | — | Kansas |
| 3 | W. C. Macy | 59 | Head | Farm | Kansas |
| 4 | Almeda Macy | 56 | Wife | — | Kansas |
| 5 | Elizabeth Still | 18 | Niece | — | Kansas |
| 6 | A. Downer Hull | 56 | Head | Farm | Kansas |
| 7 | Claire Hull | 51 | Wife | — | Kansas |
| 8 | Lucille Hull | 26 | Daughter | — | Kansas |
| 9 | Lawrence Hull | 15 | Son | — | Kansas |
| 10 | Anna Thomas | 72 | Head | — | Michigan |
| 11 | Clara Cadoret | 70 | Housekeeper | Housekeeper | Wisconsin |
| 12 | James F. Macy | 55 | Head | Farm | Kansas |
| 13 | Laura M. Macy | 52 | Wife | — | Kansas |
| 14 | Mybra Higgins | 49 | Head | — | Nova Scotia |
| 15 | Warren Higgins | 40 | Son | Farm | Colorado |
| 16 | Oscar H. Primes | 64 | Head | Farm | Kansas |
| 17 | Ida M. Primes | 56 | Wife | — | Washington |
| 18 | Ward A. Murphy | 43 | Head | Farm | Kansas |
| 19 | Hazel Murphy | 39 | Wife | — | Kansas |
| 20 | Walton W. Murphy | 16 | Son | — | Kansas |
| 21 | Thomas A. Pauley | 59 | Head | Farm | Missouri |
| 22 | Dora Pauley | 57 | Wife | — | Missouri |
| 23 | James A. Pauley | 11 | Grandson | — | Kansas |
| 24 | James Lala | 59 | Head | Farm | Kansas |
| 25 | Barbara Lala | 55 | Wife | — | Kansas |
| 26 | Lloyd T. Lala | 32 | Son | Farm | Kansas |
| 27 | Theodore F. Lala | 34 | Head | Farm | Kansas |
| 28 | Hallie Lala | 26 | Wife | — | Kansas |
| 29 | Larry Lala | 2 | Son | — | Kansas |
| 30 | John C. Cook | 83 | Head | — | Illinois |
| 31 | Fred H. Cook THIS PERSON | 47 | Son | Farm | Kansas |
| 32 | Carl Cook | 42 | Son | — | Kansas |
| 33 | Josephine Matejka | 71 | Sister-in-law | — | Illinois |
| 34 | Christina Matejka | 70 | Sister-in-law | — | Illinois |
| 35 | Edward A. Lana | 46 | Head | Farm | Kansas |
| 36 | Cora A. Lana | 51 | Sister | — | Kansas |
| 37 | Anna C. Lana | 42 | Sister | — | Kansas |
| 38 | Charlie J. Rehor | 39 | Head | Farm | Kansas |
| 39 | Mary R. Rehor | 32 | Wife | — | Kansas |
| 40 | Sarah Elizabeth Rehor | 5 | Daughter | — | Kansas |
Pedigree Summary
Fred + 1 sibling
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)