MH
Mary Harris — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Richland-County, South Carolina
Our Model Tree links this Mary Harris across the 1920, 1930 and 1940 US Censuses in Richland-County, South Carolina (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 5-person household.
Age 48
b. ~1892
Female
Head
Born: South Carolina
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Richland-County, South Carolina |
| Surname | Harris |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | South Carolina |
| 1935 Residence (City) | Columbia city |
| 1935 Residence (County) | Richland |
| Additional Details | |
| Occupation | Cook |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 156 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Cook |
| Township / Ward | Columbia City |
| Est. Birth Year | ~1892 |
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 Harris | Head | — | 48 | ~1892 |
| Mattie Harris | Other | — | 62 | ~1878 |
| Thelma Williams | Other | — | 15 | ~1925 |
| Earnest Harris | Son | — | 23 | ~1917 |
| Willie Harris | Son | — | 19 | ~1921 |
Census Appearances
1920
Richland, South …
Other, age 24
Richland, South Carolina · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Richland, South …
Spouse, age 35
Richland, South Carolina · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 17 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Richland-County, South …
Head, age 48
Richland-County, South Carolina · implied b. ~1892 — 5 household members
| Surname | Harris |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | South Carolina |
| 1935 Residence (City) | Columbia city |
| 1935 Residence (County) | Richland |
| Occupation | Cook |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 156 |
| 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 Harris 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 Harris
Head · 1940 · age 48 · b. ~1892 · South Carolina
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Richland-County, South Carolina
Open full size
1940 US Federal Census — Richland-County, South Carolina
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03832-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martha B. Roberts | 45 | Head | Edging Housekeeper | South Carolina |
| 2 | Marie Southard | 32 | Lodger | Book Binder | South Carolina |
| 3 | John Pebbleton | 27 | Lodger | Truck Driver | South Carolina |
| 4 | Rosalie Blair | 30 | Lodger | Nurse | South Carolina |
| 5 | Ruby Cabae | 42 | Head | Waitress | South Carolina |
| 6 | Louise Mckinney | 52 | Lodger | Waitress | North Carolina |
| 7 | Dwight Black | 30 | Head | District Manager | South Carolina |
| 8 | Louise Black | 28 | Wife | — | South Carolina |
| 9 | Annie Craig | 40 | Head | — | South Carolina |
| 10 | George Craig | 42 | Husband | Salesman | South Carolina |
| 11 | James Robertson | 38 | Brother-in-law | Fireman | South Carolina |
| 12 | Mildred Robertson | 37 | Sister-in-law | — | North Carolina |
| 13 | James Jr. Robertson | 18 | Nephew | — | South Carolina |
| 14 | Grace E. Jones | 45 | Head | — | Rhode Island |
| 15 | Blanche Jones | 78 | Sister-in-law | — | Georgia |
| 16 | Blanche Lone | 29 | Niece | Stenographer | South Carolina |
| 17 | Joel L. Smith | 35 | Lodger | Adjuster | South Carolina |
| 19 | Mary Harris THIS PERSON | 48 | Head | Cook | South Carolina |
| 20 | Earnest Harris | 23 | Son | Cook | South Carolina |
| 21 | Willie Harris | 19 | Son | — | South Carolina |
| 22 | Mattie Harris | 62 | Mother | — | South Carolina |
| 23 | Thelma Williams | 15 | Niece | — | South Carolina |
| 24 | John B. Washington | 60 | Head | Barber | South Carolina |
| 25 | Kate Washington | 50 | Wife | Teacher | South Carolina |
| 26 | Estelle Washington | 40 | Daughter | Teacher | South Carolina |
| 27 | George R. Tucker | 48 | Head | Janitor | South Carolina |
| 28 | Mary Tucker | 32 | Wife | Maid | South Carolina |
| 29 | Harriet Brown | 60 | Mother | Laundress | South Carolina |
| 30 | Louise Tucker | 28 | Sister | — | South Carolina |
| 31 | Edward P. Adams | 33 | Head | Presser | South Carolina |
| 32 | Mary Adams | 30 | Wife | Servant | South Carolina |
| 33 | Andrew Caughman | 35 | Lodger | Laborer | South Carolina |
| 34 | Leola Caughman | 32 | Wife | Cook Maid | South Carolina |
| 35 | John Anderson | 35 | Lodger | Laborer | South Carolina |
| 36 | Minnie Anderson | 33 | Wife | Cook | South Carolina |
| 37 | Morris Scott | 37 | Lodger | Chauffeur | South Carolina |
| 38 | Lula Counts | 40 | Head | Laundress | South Carolina |
| 39 | Helen Shaw | 26 | Head | Laundress | South Carolina |
| 40 | Jack Davis | 29 | Head | — | 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)