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Mary Wells — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, South Carolina
Our Model Tree links this Mary Wells across the 1930 and 1940 US Censuses in Sumter-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 16-person household.
Age 18
b. ~1922
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, South Carolina |
| Surname | Wells |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter City |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Sumter City |
| Est. Birth Year | ~1922 |
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.
16 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lenore Byrnes | Daughter | — | 7 | ~1933 |
| Mary Wells | Daughter | — | 18 | ~1922 |
| Mable Byrnes | Daughter | — | 11 | ~1929 |
| Alfonso Byrnes | Daughter | — | 12 | ~1928 |
| George Nettles | Head | — | 25 | ~1915 |
| Callebelle Robinson | Other | — | 25 | ~1915 |
| Earley Cheeshan | Other | — | 15 | ~1925 |
| Desora Washington | Other | — | 20 | ~1920 |
| Byron Harder | Other | — | 23 | ~1917 |
| Lucia Mcknight | Other | — | 45 | ~1895 |
| Thomas Wells | Other | — | 20 | ~1920 |
| Laura Scarborough | Other | — | 20 | ~1920 |
| Andrew Williams | Other | — | 15 | ~1925 |
| Leonard Humphries | Son | — | 5 | ~1935 |
| Arnold Byrnes | Son | — | 9 | ~1931 |
| Carolyn Nettles | Spouse | — | 19 | ~1921 |
Census Appearances
1930
Sumter, South …
Daughter, age 9
Sumter, South Carolina · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wells |
| Given Name | Mary K |
| Relationship to Head | Daughter |
| Sex | F |
| Age | 9 |
| 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
Sumter-County, South …
Daughter, age 18
Sumter-County, South Carolina · implied b. ~1922 — 16 household members
| Surname | Wells |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter City |
| 1935 Residence (County) | Sumter |
| Highest Grade | Hs 4 |
| 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 Wells across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Wells
Daughter · 1940 · age 18 · b. ~1922 · South Carolina
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Sibling
Mable Byrnes
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfonso Byrnes
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arnold Byrnes
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Humphries
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lenore Byrnes
Sibling · 1940 · age 7
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 — Sumter-County, South Carolina
Open full size
1940 US Federal Census — Sumter-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03842-00124)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Pattie L Beaman | 15 | Daughter | — | South Carolina |
| 2 | William Phillips | 20 | Nephew | Machinist | South Carolina |
| 3 | Hanoria Phillips | 25 | Niece | — | South Carolina |
| 4 | Cathleen Keels | 23 | Lodger | Stenographer | South Carolina |
| 5 | Vera Smith | 19 | Lodger | Stenographer | Ohio |
| 6 | Mary Malette | 21 | Lodger | Stenographer | South Carolina |
| 7 | Elizabeth Andrews | 18 | Daughter | — | South Carolina |
| 8 | Helen Andrews | 15 | Daughter | — | South Carolina |
| 9 | Mary Stopplebein | 71 | Head | — | South Carolina |
| 10 | John Carroll | 59 | Husband | Lumberman | South Carolina |
| 11 | Meridith Lyons | 28 | Lodger | Salesman | South Carolina |
| 12 | Dawson Holly | 23 | Son | Clerk | South Carolina |
| 13 | William Thomson | 30 | Head | Secretary | South Carolina |
| 14 | Martha Thomson | 28 | Wife | — | South Carolina |
| 15 | William Jr Thomson | 1 | Son | — | South Carolina |
| 16 | Katherine Bryan | 12 | Daughter | — | South Carolina |
| 17 | Kifford Jr Bull | 13 | Son | — | South Carolina |
| 18 | De Saussure Bull | 12 | Son | — | South Carolina |
| 19 | Elias Bull | 10 | Son | — | South Carolina |
| 20 | Frances Reynolds | 14 | Daughter | — | South Carolina |
| 21 | George Nettles | 25 | Head | Bookkeeper | South Carolina |
| 22 | Carolyn Nettles | 19 | Wife | — | South Carolina |
| 23 | Lucia Mcknight | 45 | Sister | Teacher | South Carolina |
| 24 | Leonard Humphries | 5 | Son | — | South Carolina |
| 25 | Laura Scarborough | 20 | Lodger | — | South Carolina |
| 26 | Desora Washington | 20 | Lodger | — | South Carolina |
| 27 | Andrew Williams | 15 | Lodger | — | South Carolina |
| 28 | Earley Cheeshan | 15 | Lodger | — | South Carolina |
| 29 | Callebelle Robinson | 25 | Lodger | Cook | South Carolina |
| 30 | Alfonso Byrnes | 12 | Daughter | — | South Carolina |
| 31 | Mable Byrnes | 11 | Daughter | — | South Carolina |
| 32 | Arnold Byrnes | 9 | Son | — | South Carolina |
| 33 | Lenore Byrnes | 7 | Daughter | — | South Carolina |
| 34 | Thomas M Jr Wells | 20 | Nephew | — | North Carolina |
| 35 | Mary C Wells THIS PERSON | 18 | Daughter | — | South Carolina |
| 36 | Byron Harder | 23 | Lodger | Bookkeeper | South Carolina |
| 37 | Sarah Chapman | 23 | Head | Servant | South Carolina |
| 38 | Lula Herriot | 23 | Head | Maid | South Carolina |
| 39 | Arthur Chapman | 23 | Head | Truck Driver | South Carolina |
| 40 | Martha Chapman | 21 | Wife | Cook | 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)