MC
Mary Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Laurens-County, South Carolina
Our Model Tree links this Mary Cook across the 1920, 1930 and 1940 US Censuses in Laurens-County, South Carolina (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 4-person household.
Age 64
b. ~1876
Female
Spouse
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Laurens-County, South Carolina |
| Surname | Cook |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Youngs Township |
| 1935 Residence (County) | Laurens |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Youngs Township |
| Est. Birth Year | ~1876 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Nellie Cook | Daughter | — | 38 | ~1902 |
| Mildred Cook | Daughter | — | 22 | ~1918 |
| John Cook | Head | — | 64 | ~1876 |
| Mary Cook | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Laurens, South …
Spouse, age 44
Laurens, South Carolina · implied b. ~1876 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Laurens, South …
Spouse, age 54
Laurens, South Carolina · implied b. ~1876 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary U |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 25 |
| 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
Laurens-County, South …
Spouse, age 64
Laurens-County, South Carolina · implied b. ~1876 — 4 household members
| Surname | Cook |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Youngs Township |
| 1935 Residence (County) | Laurens |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| 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 Mary Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Cook
Spouse · 1940 · age 64 · b. ~1876 · South Carolina
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Laurens-County, South Carolina
Open full size
1940 US Federal Census — Laurens-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03821-01182)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Therathen Kelley | 35 | Wife | — | South Carolina |
| 42 | Willie Kelley | 12 | Son | — | South Carolina |
| 43 | Joe Van Kelley | 10 | Son | — | South Carolina |
| 44 | Doris Kelley | 9 | Son | — | South Carolina |
| 45 | Helen Kelley | 7 | Daughter | — | South Carolina |
| 46 | Nathaniel Kelley | 5 | Son | — | South Carolina |
| 47 | John E. Kelley | 4 | Son | — | South Carolina |
| 48 | Mamie M. Kelley | 1 | Daughter | — | South Carolina |
| 49 | John A. Green | 67 | Head | Farmer | South Carolina |
| 50 | Mitta Green | 62 | Wife | — | South Carolina |
| 51 | Fred Garrett | 16 | Grandson | — | South Carolina |
| 52 | Byron Garrett | 14 | Grandson | — | South Carolina |
| 53 | Edgar Garrett | 9 | Grandson | — | South Carolina |
| 54 | Annie R. Garrett | 8 | Granddaughter | — | South Carolina |
| 55 | Marjorie Garrett | 4 | Granddaughter | — | South Carolina |
| 56 | Maxine Garrett | 1 | Granddaughter | — | South Carolina |
| 57 | Frank Scott | 35 | Head | Farmer | South Carolina |
| 58 | Virginia Scott | 21 | Wife | — | South Carolina |
| 59 | Frank Jr. Scott | 3 | Son | — | South Carolina |
| 60 | John H. Scott | 1 | Son | — | South Carolina |
| 61 | Minnie L. Scott | 29 | Sister | Laborer | South Carolina |
| 62 | John B. Cook | 64 | Head | Farmer | South Carolina |
| 63 | Mary S. Cook THIS PERSON | 64 | Wife | — | South Carolina |
| 64 | Nellie Cook | 38 | Daughter | — | South Carolina |
| 65 | Mildred Cook | 22 | Daughter | — | South Carolina |
| 66 | Will Hughes | 69 | Head | — | South Carolina |
| 67 | Eva Hughes | 65 | Wife | — | South Carolina |
| 68 | Dee Hughes | 23 | Son | Laborer | South Carolina |
| 69 | Bessie M. Hughes | 21 | Daughter | — | South Carolina |
| 70 | Bennie Hughes | 19 | Son | Day Laborer | South Carolina |
| 71 | Mamie P. Craine | 58 | Head | — | South Carolina |
| 72 | Ben L. Thackston | 26 | Son-in-law | Farmer | South Carolina |
| 73 | Carmalee C. Thackston | 23 | Daughter | Secretary | South Carolina |
| 74 | Jesse D. Thackston | 42 | Head | Farmer | South Carolina |
| 75 | Kate Thackston | 39 | Wife | — | South Carolina |
| 76 | Ted Thackston | 19 | Son | — | South Carolina |
| 77 | Mary Thackston | 17 | Daughter | — | South Carolina |
| 78 | Ray Thackston | 15 | Son | — | South Carolina |
| 79 | James Thackston | 13 | Son | — | South Carolina |
| 80 | Jack Thackston | 11 | Son | — | South Carolina |
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)