WC
William Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Williamsburg-County, South Carolina
Our Model Tree links this William Cook across the 1920, 1930 and 1940 US Censuses in Williamsburg-County, South Carolina (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Williamsburg-County, South Carolina |
| Surname | Cook |
| Given Name | William J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Greeleyville |
| 1935 Residence (County) | Williamsburg |
| Additional Details | |
| Occupation | Manager |
| Industry | Service Station |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 794 |
| Highest Grade | H-4 |
| 1935 Residence | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Manager |
| Township / Ward | Greeleyville |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Cook | Head | — | 50 | ~1890 |
| William Cook | Son | — | 27 | ~1913 |
| Cecil Cook | Son | — | 20 | ~1920 |
| Gladys Cook | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Williamsburg, South …
Son, age 7
Williamsburg, South Carolina · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | William J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Williamsburg, South …
Son, age 17
Williamsburg, South Carolina · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | William J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Williamsburg-County, South …
Son, age 27
Williamsburg-County, South Carolina · implied b. ~1913 — 4 household members
| Surname | Cook |
| Given Name | William J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Greeleyville |
| 1935 Residence (County) | Williamsburg |
| Occupation | Manager |
| Industry | Service Station |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 794 |
| Highest Grade | H-4 |
| 1935 Residence | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 William Cook (~0.92 confidence) and father William Cook (~0.92 confidence) and father William Cook (~0.92 confidence) and mother Gladys Cook (~0.92 confidence) and mother Gladys Cook (~0.92 confidence) and mother Gladys Cook (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Cook
b. ~1890
Source father
● Household
· direct · ~0.92
Father
William Cook
b. ~1890
Source father
● Household
· direct · ~0.92
Father
William Cook
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Gladys Cook
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Gladys Cook
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Gladys Cook
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cook
Son · 1940 · age 27 · b. ~1913 · South Carolina
★ You are viewing this record
Sibling
Cecil 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 — Williamsburg-County, South Carolina
Open full size
1940 US Federal Census — Williamsburg-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03844-00008)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Otto Pack | 40 | Head | Salesman | South Carolina |
| 2 | Lillian G. Pack | 33 | Wife | — | South Carolina |
| 3 | Joseph Otto Pack | 13 | Son | — | South Carolina |
| 4 | William R. Pack | 5 | Son | — | South Carolina |
| 5 | Sidney F. Winhourn | 35 | Head | Owner | North Carolina |
| 6 | Beatrice Winhourn | 35 | Wife | — | Virginia |
| 7 | Mary Henri Winhourn | 2 | Daughter | — | Virginia |
| 8 | Mattie Ferrell | 54 | Head | Librarian | South Carolina |
| 9 | Edith Ferrell | 22 | Daughter | Teacher | South Carolina |
| 10 | Raymond Ferrell | 20 | Son | — | South Carolina |
| 11 | William Lovelace | 28 | Head | Clerk | South Carolina |
| 12 | Dorothy Lovelace | 26 | Wife | — | South Carolina |
| 13 | Guy Quattlebaum | 44 | Head | Distributor | Georgia |
| 14 | Lucile Quattlebaum | 41 | Wife | — | Georgia |
| 15 | Lucile Quattlebaum | 16 | Daughter | — | Georgia |
| 16 | Guy Jr. Quattlebaum | 12 | Son | — | Georgia |
| 17 | William Quattlebaum | 7 | Son | — | Georgia |
| 18 | Thomas A. Conner | 70 | Father in law | — | South Carolina |
| 19 | Laura M. Yulton | 66 | Head | — | South Carolina |
| 20 | Henry M. Riden | 20 | Lodger | Dizzy Line Pilot | South Carolina |
| 21 | Hugh D. Terry | 39 | Head | Superintendent | Mississippi |
| 22 | Maria E. Terry | 35 | Wife | — | Ohio |
| 23 | Frank M. Shiner | 39 | Head | Engineer | South Carolina |
| 24 | Lucile P. Shiner | 30 | Wife | — | South Carolina |
| 25 | William O. Lybrand | 55 | Head | Mechanic | South Carolina |
| 26 | Callie Mae Lybrand | 53 | Wife | — | South Carolina |
| 27 | Gene Mae Lybrand | 14 | Daughter | — | South Carolina |
| 28 | William J. Cook | 50 | Head | Agent | South Carolina |
| 29 | Gladys Cook | 47 | Wife | — | South Carolina |
| 30 | William J. Jr. Cook THIS PERSON | 27 | Son | Manager | South Carolina |
| 31 | Cecil R. Cook | 20 | Son | Salesman | South Carolina |
| 32 | John Young Oliver | 70 | Head | Farmer | South Carolina |
| 33 | Hattie Gerald | 41 | Servant | Servant | South Carolina |
| 34 | Joseph Heber Haselden | 70 | Head | Retired M.D. | South Carolina |
| 35 | Mamie G. Haselden | 55 | Wife | — | South Carolina |
| 36 | Elizabeth Haselden | 32 | Daughter | — | South Carolina |
| 37 | John Haselden | 18 | Son | — | South Carolina |
| 38 | William H. Lovelace | 61 | Head | Foreman | South Carolina |
| 39 | Virginia Lovelace | 58 | Wife | Landlady | South Carolina |
| 40 | Mary Lovelace | 24 | Daughter | — | South Carolina |
Pedigree Summary
William + 1 sibling
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)