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Mary Greer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, South Carolina
Our Model Tree links this Mary Greer across the 1930 and 1940 US Censuses in Union-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, South Carolina |
| Surname | Greer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Union |
| 1935 Residence (County) | Union |
| Additional Details | |
| Highest Grade | El 8 |
| 1935 Residence | So. Car. |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Santon Township |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Greer | Daughter | — | 19 | ~1921 |
| Donald Greer | Son | — | 18 | ~1922 |
| Kenneth Greer | Son | — | 13 | ~1927 |
| Mary Greer | Daughter | — | 15 | ~1925 |
| William Greer | Son | — | 17 | ~1923 |
| Richard Greer | Son | — | 3 | ~1937 |
| Robert Greer | Head | — | 49 | ~1891 |
| Paul Greer | Son | — | 9 | ~1931 |
| Eva Greer | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Union, South …
Daughter, age 7
Union, South Carolina · implied b. ~1923 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Greer |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| 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 |
1940
Union-County, South …
Daughter, age 15
Union-County, South Carolina · implied b. ~1925 — 9 household members
| Surname | Greer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Union |
| 1935 Residence (County) | Union |
| Highest Grade | El 8 |
| 1935 Residence | So. Car. |
| 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 Greer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Greer
Daughter · 1940 · age 15 · b. ~1925 · South Carolina
★ You are viewing this record
Sibling
Donald Greer
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Greer
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Greer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Greer
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Greer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Greer
Sibling · 1940 · age 13
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 — Union-County, South Carolina
Open full size
1940 US Federal Census — Union-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03843-00472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ida Pope | 60 | Wife | — | South Carolina |
| 2 | Thomas B. Harper | 55 | Head | Farmer | South Carolina |
| 3 | Fred Harper | 19 | Son | Laborer | South Carolina |
| 4 | Sadie Harper | 18 | Daughter | — | South Carolina |
| 5 | Patricia Harper | 13 | Granddaughter | — | South Carolina |
| 6 | James Harper | 5 | Grandson | — | South Carolina |
| 7 | Robert C. Greer | 49 | Head | Farmer | South Carolina |
| 8 | Eva Greer | 45 | Wife | — | South Carolina |
| 9 | Betty Greer | 19 | Daughter | Seamer | South Carolina |
| 10 | Donald H. Greer | 18 | Son | Soldier | South Carolina |
| 11 | William H. Greer | 17 | Son | Soldier | South Carolina |
| 12 | Mary Greer THIS PERSON | 15 | Daughter | — | South Carolina |
| 13 | Kenneth Greer | 13 | Son | — | South Carolina |
| 14 | Paul Greer | 9 | Son | — | South Carolina |
| 15 | Richard Greer | 3 | Son | — | South Carolina |
| 16 | Joe Worthy | 37 | Head | Farmer | South Carolina |
| 17 | Arie Worthy | 39 | Wife | — | South Carolina |
| 18 | James H. Worthy | 18 | Son | Laborer | South Carolina |
| 19 | Bell Worthy | 16 | Daughter | Laborer | South Carolina |
| 20 | Ella Worthy | 14 | Daughter | Laborer | South Carolina |
| 21 | Eddie Worthy | 12 | Son | — | South Carolina |
| 22 | Joe Jr. Worthy | 6 | Son | — | South Carolina |
| 23 | Frances Worthy | 5 | Daughter | — | South Carolina |
| 24 | Johnson Gardener | 56 | Head | Farmer | South Carolina |
| 25 | Mamie Gardener | 41 | Wife | — | South Carolina |
| 26 | Nettie Gardener | 19 | Granddaughter | Laborer | South Carolina |
| 27 | Wilbur B. May | 71 | Head | Carpenter | North Carolina |
| 28 | Jeanette May | 59 | Wife | — | North Carolina |
| 29 | Mary May | 18 | Daughter | — | South Carolina |
| 30 | John Mobley | 36 | Head | Laborer | South Carolina |
| 31 | Annie Mobley | 34 | Wife | — | South Carolina |
| 32 | Elvice Mobley | 13 | Daughter | — | South Carolina |
| 33 | Josephine Mobley | 12 | Daughter | — | South Carolina |
| 34 | Christine Mobley | 10 | Daughter | — | South Carolina |
| 35 | John Mobley | 8 | Son | — | South Carolina |
| 36 | Willie Mobley | 6 | Son | — | South Carolina |
| 37 | Ruth Mobley | 4 | Daughter | — | South Carolina |
| 38 | Louise Mobley | 2 | Daughter | — | South Carolina |
| 39 | Ernest Jenning | 18 | Brother-in-law | Laborer | South Carolina |
| 40 | Willie Epps | 24 | Head | Laborer | 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)