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Mary Hammond — 1920 US Census Record
Model Tree available1920 United States Federal Census · Richland, South Carolina
Our Model Tree links this Mary Hammond across the 1920, 1930 and 1940 US Censuses in Richland, South Carolina (XGBoost, ~Confirmed), with identified parents Mary & June — first a daughter (b.~1917), then head of a 7-person household.
Age 3
b. ~1917
Female
Daughter
Born: South Carolina
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Richland, South Carolina |
| Surname | Hammond |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Columbia |
| 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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hammond | Daughter | — | 3 | ~1917 |
| Mary Hammond | Head | — | 46 | ~1874 |
| Mary Thompson | Other | — | 21 | ~1899 |
| Elmiah Thompson | Other | — | 26 | ~1894 |
| Jake Harris | Other | — | 21 | ~1899 |
| Annie Harris | Other | — | 20 | ~1900 |
| June Hammond | Spouse | — | 40 | ~1880 |
Census Appearances
1920
Richland, South …
Daughter, age 3
Richland, South Carolina · implied b. ~1917 — 7 household members
| Surname | Hammond |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| 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
Richland, South …
Daughter, age 13
Richland, South Carolina · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Margie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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
Richland-County, South …
Head, age 24
Richland-County, South Carolina · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Mattie |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | N |
| Age | 24 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Columbia City |
| 1935 Residence (County) | Richland |
| Occupation | Laundress |
| Industry | Own Home |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 510 |
| Highest Grade | No 8 |
| 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 Hammond across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Hammond (~0.92 confidence) and father June Hammond (~0.92 confidence) and father Arthur Hammond (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Hammond
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
June Hammond
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Arthur Hammond
b. ~1884
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Hammond
Daughter · 1920 · age 3 · b. ~1917 · South Carolina
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Richland, South Carolina
Open full size
1920 US Federal Census — Richland, South Carolina
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1707unit:0013)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Henry Knuckles | 73 | Head | Doctor | Kentucky |
| 52 | Mary A. Knuckles | 72 | Wife | — | South Carolina |
| 53 | Theodora Knuckles | 34 | Daughter | Maid | South Carolina |
| 54 | Mary Knuckles | 17 | Daughter | — | South Carolina |
| 55 | Sidney Knuckles | 14 | Son | — | South Carolina |
| 56 | Si Brown | 28 | Head | Driver | South Carolina |
| 57 | Lillie Brown | 23 | Wife | — | South Carolina |
| 58 | Mary Hammond | 46 | Head | — | South Carolina |
| 59 | June Hammond | 40 | Husband | Carpenter | South Carolina |
| 60 | Mary M. Hammond THIS PERSON | 3 | Daughter | — | South Carolina |
| 61 | Annie Harris | 20 | Roomer | — | South Carolina |
| 62 | Jake Harris | 21 | Roomer | Truck | South Carolina |
| 63 | Mary Thompson | 21 | Roomer | — | South Carolina |
| 64 | Elmiah Thompson | 26 | Roomer | Laborer | Georgia |
| 65 | Laura Mack | 32 | Head | Housekeeper | South Carolina |
| 66 | Theodora Mack | 11 | Son | — | South Carolina |
| 67 | James Mack | 10 | Son | — | South Carolina |
| 68 | James Edward Mack | 3 | Son | — | South Carolina |
| 69 | Willie Mack | 1 | Daughter | — | South Carolina |
| 70 | Laura Lewis | 14 | Roomer | Porter | South Carolina |
| 71 | Joseph Jenkins | 22 | Head | — | South Carolina |
| 72 | Jennie Jenkins | 19 | Wife | — | South Carolina |
| 73 | Rosa Lee Jenkins | 1 | Granddaughter | — | South Carolina |
| 74 | John Francis | 29 | Head | — | South Carolina |
| 75 | Carrie Francis | 22 | Wife | — | South Carolina |
| 76 | Catherine Bostick | 17 | Roomer | Cook | Virginia |
| 77 | Sidney Brown | 18 | Roomer | Maid | North Carolina |
| 78 | James Wilkes | 25 | Head | Driver | South Carolina |
| 79 | Irene Wilkes | 21 | Wife | — | South Carolina |
| 80 | George Brown | 57 | Head | Laundress | South Carolina |
| 81 | George Brown | 22 | Son | Driver | South Carolina |
| 82 | Carrie Hammond | 34 | Head | Housekeeper | South Carolina |
| 83 | Mattie Boyd | 27 | Roomer | Laundress | Virginia |
| 84 | Ida Sudrick | 25 | Roomer | Maid | South Carolina |
| 85 | Willie Mckenzie | 22 | Roomer | Cook | South Carolina |
| 86 | James Howard | 21 | Roomer | Maid | South Carolina |
| 87 | John Simmons | 24 | Head | Switchman | Virginia |
| 88 | Lois Simmons | 22 | Wife | — | South Carolina |
| 89 | James Wilkes | 29 | Roomer | Barber | South Carolina |
| 90 | Addie Wilkes | 24 | Roomer | — | North Carolina |
| 91 | Willie Wilkes | 6 | Roomer | — | South Carolina |
| 92 | Henry Goodman | 30 | Head | Laundress | South Carolina |
| 93 | Eva May Goodman | 15 | Daughter | — | South Carolina |
| 94 | Thomas Goodman | 15 | Son | — | South Carolina |
| 95 | Francine Goodman | 2 | Daughter | — | South Carolina |
| 96 | Willie Barnes | 26 | Head | — | South Carolina |
| 97 | Lindy Pratt | 42 | Head | Nurse | South Carolina |
| 98 | Rosa Pratt | 26 | Daughter | Laundry | South Carolina |
| 99 | Peter Pratt | 30 | Son-in-law | — | South Carolina |
| 100 | John Pratt | 8 | Grand-son | Cook | South Carolina |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)