MC
Mary Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Horry-County, South Carolina
Our Model Tree links this Mary Cox across the 1920, 1930 and 1940 US Censuses in Horry-County, South Carolina (XGBoost, ~Confirmed), with identified parents Mary & Olin — first a daughter (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Horry-County, South Carolina |
| Surname | Cox |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Simpson Creek |
| 1935 Residence (County) | Horry |
| Additional Details | |
| Occupation | no |
| Industry | no |
| Class of Worker | no |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Simpson Creek |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Geraldine Cox | Daughter | — | 11 | ~1929 |
| Virginia Cox | Daughter | — | 17 | ~1923 |
| Alberla Cox | Daughter | — | 15 | ~1925 |
| Mary Cox | Daughter | — | 23 | ~1917 |
| Olin Cox | Head | — | 54 | ~1886 |
| Anaburn Cox | Son | — | 20 | ~1920 |
| Martha Cox | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Horry, South …
Daughter, age 2
Horry, South Carolina · implied b. ~1918 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Mary B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Horry, South …
Daughter, age 14
Horry, South Carolina · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Age at First Marriage | 7 |
| 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
Horry-County, South …
Daughter, age 23
Horry-County, South Carolina · implied b. ~1917 — 7 household members
| Surname | Cox |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Simpson Creek |
| 1935 Residence (County) | Horry |
| Occupation | no |
| Industry | no |
| Class of Worker | no |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Cox (~0.92 confidence) and father Olin Cox (~0.92 confidence) and mother Martha Cox (~0.92 confidence) and father Hanson Cox (~0.92 confidence) and mother Lillie Cox (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Cox
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Olin Cox
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Martha Cox
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Hanson Cox
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Lillie Cox
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Cox
Daughter · 1940 · age 23 · b. ~1917 · South Carolina
★ You are viewing this record
Sibling
Alberla Cox
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Cox
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anaburn Cox
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Cox
Sibling · 1940 · age 17
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 — Horry-County, South Carolina
Open full size
1940 US Federal Census — Horry-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03818-00449)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lelabelle Prince | 16 | daughter | No | South Carolina |
| 42 | Edward Prince | 12 | son | No | South Carolina |
| 43 | Eluae Prince | 10 | daughter | — | South Carolina |
| 44 | Chuelene Prince | 8 | daughter | — | South Carolina |
| 45 | Carlene Prince | 7 | daughter | — | South Carolina |
| 46 | J. L. Prince | 2 | son | — | South Carolina |
| 47 | Olin L. Cox | 54 | Head | Farmer | South Carolina |
| 48 | Martha Cox | 53 | Wife | No | South Carolina |
| 49 | Mary Cox THIS PERSON | 23 | daughter | No | South Carolina |
| 50 | Anaburn Cox | 20 | son | Labourer | South Carolina |
| 51 | Virginia Cox | 17 | daughter | No | South Carolina |
| 52 | Alberla Cox | 15 | daughter | No | South Carolina |
| 53 | Geraldine Cox | 11 | daughter | — | South Carolina |
| 54 | Ira Prince | 28 | Head | Labour | South Carolina |
| 55 | Nuluh Prince | 27 | Wife | No | South Carolina |
| 56 | Pearl Prince | 6 | daughter | — | South Carolina |
| 57 | Silvia Prince | 3 | daughter | — | South Carolina |
| 58 | Marion Prince | 0 | son | — | South Carolina |
| 59 | W. M. M. Hughes | 64 | Head | Farmer | South Carolina |
| 60 | Cora Hughes | 54 | Wife | No | South Carolina |
| 61 | Albert Hughes | 28 | son | Labour | South Carolina |
| 62 | Galbreath Hughes | 26 | son | Labour | South Carolina |
| 63 | Carl Hughes | 22 | son | Labour | South Carolina |
| 64 | Howard Hughes | 18 | son | Labour | South Carolina |
| 65 | Edith Hughes | 16 | daughter | No | South Carolina |
| 66 | Olene Hughes | 14 | daughter | No | South Carolina |
| 67 | George Hughes | 11 | son | — | South Carolina |
| 68 | G. Hamp Prince | 62 | Head | Farmer | South Carolina |
| 69 | Liston Prince | 27 | son | Laborer | South Carolina |
| 70 | Lestree Prince | 21 | son | Labour | South Carolina |
| 71 | Lacy Prince | 31 | Head | Labour | South Carolina |
| 72 | Annie Prince | 24 | Wife | No | South Carolina |
| 73 | Robert Prince | 10 | son | — | South Carolina |
| 74 | Louise Prince | 7 | daughter | — | South Carolina |
| 75 | Alma Prince | 3 | daughter | — | South Carolina |
| 76 | L. B. Prince | 2 | son | — | South Carolina |
| 77 | J. C. Howard | 47 | Head | Farmer | South Carolina |
| 78 | Ruth Howard | 38 | Wife | No | South Carolina |
| 79 | J. C. Jr. Howard | 16 | son | Labour | South Carolina |
| 80 | Leroy Howard | 14 | son | No | South Carolina |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 5 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)