RM
Richard Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mccormick-County, South Carolina
Our Model Tree links this Richard Martin across the 1930 and 1940 US Censuses in Mccormick-County, South Carolina (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 11-person household.
Age 11
b. ~1929
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mccormick-County, South Carolina |
| Surname | Martin |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Edgefield, Townships |
| 1935 Residence (County) | McCormick |
| Additional Details | |
| Highest Grade | Yes 3 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Edgefield Townships |
| Est. Birth Year | ~1929 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Louis Martin | Daughter | — | 2 | ~1938 |
| Estelle Martin | Daughter | — | 9 | ~1931 |
| Viola Martin | Daughter | — | 17 | ~1923 |
| Mary Martin | Daughter | — | 7 | ~1933 |
| Maybelle Martin | Daughter | — | 20 | ~1920 |
| Ethel Martin | Daughter | — | 5 | ~1935 |
| John Martin | Head | — | 59 | ~1881 |
| Richard Martin | Son | — | 11 | ~1929 |
| Robert Martin | Son | — | 19 | ~1921 |
| Clarence Martin | Son | — | 15 | ~1925 |
| Amy Martin | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Mccormick, South …
Son, age 2
Mccormick, South Carolina · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Richard |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Mccormick-County, South …
Son, age 11
Mccormick-County, South Carolina · implied b. ~1929 — 11 household members
| Surname | Martin |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Edgefield, Townships |
| 1935 Residence (County) | McCormick |
| Highest Grade | Yes 3 |
| 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 Richard Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard Martin
Son · 1940 · age 11 · b. ~1929 · South Carolina
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Sibling
Clarence Martin
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Martin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Martin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maybelle Martin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Estelle Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Martin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Viola Martin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Martin
Sibling · 1940 · age 2
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 — Mccormick-County, South Carolina
Open full size
1940 US Federal Census — Mccormick-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03824-00108)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lula Harrison | 47 | Wife | — | South Carolina |
| 2 | Willie L Harrison | 20 | Son | Laborer | South Carolina |
| 3 | James W Harrison | 18 | Son | Laborer | South Carolina |
| 4 | Rosie B Harrison | 17 | Daughter | Laborer | South Carolina |
| 5 | Jamie Harrison | 9 | Daughter | — | South Carolina |
| 6 | Jonnie Harrison | 7 | Son | — | South Carolina |
| 7 | Leon Harrison | 4 | Son | — | South Carolina |
| 8 | Leonard Harrison | 4 | Son | — | South Carolina |
| 9 | Carrie Harrison | 1 | Daughter | — | South Carolina |
| 10 | John H Calahan | 53 | Head | Farmer | South Carolina |
| 11 | Cora Calahan | 40 | Wife | — | South Carolina |
| 12 | Mary Calahan | 18 | Daughter | — | South Carolina |
| 13 | Albertha Calahan | 5 | Daughter | — | South Carolina |
| 14 | Hattie Jones | 65 | Mother | — | South Carolina |
| 15 | Joseph Hardy | 43 | Head | Farmer | South Carolina |
| 16 | Annie Hardy | 43 | Wife | — | South Carolina |
| 17 | Everline Hardy | 18 | Daughter | N.Y.A. | South Carolina |
| 18 | William Hardy | 17 | Son | — | South Carolina |
| 19 | Louis Hardy | 15 | Son | — | South Carolina |
| 20 | Elberta Hardy | 13 | Daughter | — | South Carolina |
| 21 | Samuel Hardy | 11 | Son | — | South Carolina |
| 22 | Thelma Hardy | 9 | Daughter | — | South Carolina |
| 23 | Mary L Hardy | 7 | Daughter | — | South Carolina |
| 24 | Emmie I Hardy | 5 | Daughter | — | South Carolina |
| 25 | William Rooney | 32 | Head | Farmer | South Carolina |
| 26 | Eleanor Rooney | 26 | Wife | — | South Carolina |
| 27 | Everice J Rooney | 8 | Daughter | — | South Carolina |
| 28 | John Martin | 59 | Head | Farmer | South Carolina |
| 29 | Amy Martin | 44 | Wife | — | South Carolina |
| 30 | Maybelle Martin | 20 | Daughter | N.Y.A. | South Carolina |
| 31 | Robert Martin | 19 | Son | — | South Carolina |
| 32 | Viola Martin | 17 | Daughter | — | South Carolina |
| 33 | Clarence Martin | 15 | Son | — | South Carolina |
| 34 | Richard Martin THIS PERSON | 11 | Son | — | South Carolina |
| 35 | Estelle Martin | 9 | Daughter | — | South Carolina |
| 36 | Mary R Martin | 7 | Daughter | — | South Carolina |
| 37 | Ethel Martin | 5 | Daughter | — | South Carolina |
| 38 | Louis Martin | 2 | Daughter | — | South Carolina |
| 39 | Thomas Cunningham | 38 | Head | Farmer | South Carolina |
| 40 | Mamie Cunningham | 37 | Wife | — | South Carolina |
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)