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Mary Wallace — 1940 US Census Record
Model Tree available1940 United States Federal Census · York-County, South Carolina
Our Model Tree links this Mary Wallace across the 1920, 1930 and 1940 US Censuses in York-County, South Carolina (XGBoost, ~Confirmed), with identified parents Elizabeth & Mary — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | York-County, South Carolina |
| Surname | Wallace |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Clover Town |
| 1935 Residence (County) | York |
| Additional Details | |
| Occupation | frame spinner |
| Industry | cotton mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 496 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Frame Spinner |
| Township / Ward | Clover Town |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Wallace | Daughter | — | 21 | ~1919 |
| Margaret Wallace | Daughter | — | 8 | ~1932 |
| Mary Wallace | Head | — | 42 | ~1898 |
| Joe Wallace | Son | — | 10 | ~1930 |
| James Wallace | Son | — | 23 | ~1917 |
Census Appearances
1920
York, South …
Other, age 1
York, South Carolina · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | Mary K |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | North Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
York, South …
Daughter, age 11
York, South Carolina · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | North Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
York-County, South …
Daughter, age 21
York-County, South Carolina · implied b. ~1919 — 5 household members
| Surname | Wallace |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Clover Town |
| 1935 Residence (County) | York |
| Occupation | frame spinner |
| Industry | cotton mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 496 |
| Highest Grade | No 6 |
| 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 Wallace across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Wallace (~0.83 confidence) and mother Mary Wallace (~0.92 confidence) and father Thomas Wallace (~0.92 confidence). The pedigree spans 2 generations with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Mother
Elizabeth Wallace
b. ~1860
Source father>mother
● Household
· direct · ~0.83
Mother
Mary Wallace
b. ~1898
Source mother
● Household
· direct · ~0.92
Father
Thomas Wallace
b. ~1899
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Wallace
Daughter · 1940 · age 21 · b. ~1919 · South Carolina
★ You are viewing this record
Sibling
Margaret Wallace
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Wallace
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Wallace
Sibling · 1940 · age 23
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 — York-County, South Carolina
Open full size
1940 US Federal Census — York-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03846-00359)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James D. Neelands | 18 | Son | Sweeper | South Carolina |
| 42 | Charlie Neelands | 13 | Son | — | South Carolina |
| 43 | Sue Alexander | 19 | Great-niece | — | South Carolina |
| 44 | Charley Biddix | 29 | Head | Comber Hand | North Carolina |
| 45 | Zenera Biddix | 28 | Wife | Winder Hand | North Carolina |
| 46 | Helen Biddix | 8 | Daughter | — | North Carolina |
| 47 | Dean Biddix | 6 | Son | — | North Carolina |
| 48 | Preston Biddix | 5 | Son | — | North Carolina |
| 49 | Carrie Cole | 20 | Lodger | Winder Hand | Georgia |
| 50 | S. Armand Pruitt | 28 | Head | Doff Spinning | Alabama |
| 51 | Grace Pruitt | 27 | Wife | Spooler Hand | South Carolina |
| 52 | Nellie Mae Pruitt | 6 | Daughter | — | North Carolina |
| 53 | S. Armand Jr. Pruitt | 5 | Son | — | North Carolina |
| 54 | Wilton Leon Pruitt | 3 | Son | — | South Carolina |
| 55 | Martha Humphries | 57 | Mother-in-law | — | South Carolina |
| 56 | Earl Faris | 28 | Head | Card Hand | South Carolina |
| 57 | Cleo Faris | 24 | Wife | Winder Hand | South Carolina |
| 58 | K. Dixon Martin | 34 | Head | Slubber Hand | South Carolina |
| 59 | Mary Ellen Martin | 30 | Wife | — | South Carolina |
| 60 | Ella Tree Martin | 11 | Daughter | — | South Carolina |
| 61 | L. J. Martin | 10 | Son | — | South Carolina |
| 62 | Ross Martin | 6 | Son | — | South Carolina |
| 63 | Virginia Martin | 1 | Daughter | — | South Carolina |
| 64 | Mary Wallace | 42 | Head | — | North Carolina |
| 65 | James Wallace | 23 | Son | Oiler | South Carolina |
| 66 | Mary Helen Wallace THIS PERSON | 21 | Daughter | Frame Spinner | South Carolina |
| 67 | Joe Wallace | 10 | Son | — | South Carolina |
| 68 | Margaret Wallace | 8 | Daughter | — | South Carolina |
| 69 | Claude Lucas | 27 | Head | Running Drawing | South Carolina |
| 70 | Mattie Lucas | 33 | Wife | Winder Hand | South Carolina |
| 71 | Sara Lee Lucas | 11 | Daughter | — | South Carolina |
| 72 | Martha Nell Lucas | 10 | Daughter | — | South Carolina |
| 73 | Mary Lucas | 4 | Daughter | — | South Carolina |
| 74 | Mary Lucas | 64 | Mother | — | South Carolina |
| 75 | Glenn Grissons | 30 | Head | Runs Cards | North Carolina |
| 76 | Mary Grissons | 34 | Wife | Frame Spinner | South Carolina |
| 77 | Idrell E. Boyd | 45 | Head | Watchman | South Carolina |
| 78 | Mary Boyd | 47 | Wife | — | South Carolina |
| 79 | Idrell E. Jr. Boyd | 21 | Son | Card Stripper | South Carolina |
| 80 | Marshall Boyd | 8 | Son | — | South Carolina |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 2 parents
~0.92
Gen 2 · 1 grandparents
~0.83
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)