MM
Mary Mclean — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dillon-County, South Carolina
Our Model Tree links this Mary Mclean across the 1930 and 1940 US Censuses in Dillon-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 13-person household.
Age 28
b. ~1912
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dillon-County, South Carolina |
| Surname | McLean |
| Given Name | Mary Lizzie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 28 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Harleesville Township |
| 1935 Residence (County) | Dillon |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 888 |
| Highest Grade | No 3 |
| 1935 Residence | Same Place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Laborer |
| Township / Ward | Harleesville Township |
| Est. Birth Year | ~1912 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Mclean | Daughter | — | 8 | ~1932 |
| Florence Mclean | Daughter | — | 19 | ~1921 |
| Virginia Mclean | Daughter | — | 10 | ~1930 |
| Louise Mclean | Daughter | — | 15 | ~1925 |
| Mary Mclean | Daughter | — | 28 | ~1912 |
| Luther Mclean | Head | — | 49 | ~1891 |
| Junius Mclean | Son | — | 13 | ~1927 |
| Belton Mclean | Son | — | 25 | ~1915 |
| David Mclean | Son | — | 9 | ~1931 |
| Willie Mclean | Son | — | 4 | ~1936 |
| Wilmer Mclean | Son | — | 21 | ~1919 |
| Tommie Mclean | Son | — | 3 | ~1937 |
| Lula Mclean | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Dillon, South …
Daughter, age 19
Dillon, South Carolina · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLean |
| Given Name | Mary N. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Dillon-County, South …
Daughter, age 28
Dillon-County, South Carolina · implied b. ~1912 — 13 household members
| Surname | McLean |
| Given Name | Mary Lizzie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 28 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Harleesville Township |
| 1935 Residence (County) | Dillon |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 888 |
| Highest Grade | No 3 |
| 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 Mclean across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mclean
Daughter · 1940 · age 28 · b. ~1912 · South Carolina
★ You are viewing this record
Sibling
David Mclean
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Mclean
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Junius Mclean
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Mclean
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Mclean
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Mclean
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Belton Mclean
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wilmer Mclean
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tommie Mclean
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Mclean
Sibling · 1940 · age 15
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 — Dillon-County, South Carolina
Open full size
1940 US Federal Census — Dillon-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03804-00268)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alex S. Cottingham | 37 | Head | Farmer | South Carolina |
| 42 | Myrtle Cottingham | 37 | Wife | — | South Carolina |
| 43 | Monroe Cottingham | 7 | Son | — | South Carolina |
| 44 | Colleen Cottingham | 2 | Daughter | — | South Carolina |
| 45 | Helen Billens | 60 | Head | — | South Carolina |
| 46 | William Billens | 28 | Son | Laborer | South Carolina |
| 47 | Ira Billens | 14 | Daughter | — | South Carolina |
| 48 | Luther Mclean | 49 | Head | Farmer | South Carolina |
| 49 | Lula Mclean | 43 | Wife | — | South Carolina |
| 50 | Mary Lizzie Mclean THIS PERSON | 28 | Daughter | Laborer | South Carolina |
| 51 | Wilmer Mclean | 21 | Son | Laborer | South Carolina |
| 52 | Florence Mclean | 19 | Daughter | Laborer | South Carolina |
| 53 | Louise Mclean | 15 | Daughter | — | South Carolina |
| 54 | Junius Mclean | 13 | Son | — | South Carolina |
| 55 | Virginia Lee Mclean | 10 | Daughter | — | South Carolina |
| 56 | David Mclean | 9 | Son | — | South Carolina |
| 57 | Evelyn Mclean | 8 | Daughter | — | South Carolina |
| 58 | Willie E. Mclean | 4 | Son | — | South Carolina |
| 59 | Tommie Mclean | 3 | Son | — | South Carolina |
| 60 | Belton Mclean | 25 | Son | Laborer | South Carolina |
| 61 | Don Berry | 39 | Head | Farmer | South Carolina |
| 62 | Bessie Berry | 39 | Wife | — | South Carolina |
| 63 | Eveline Berry | 15 | Daughter | — | South Carolina |
| 64 | Imogene Berry | 14 | Daughter | — | South Carolina |
| 65 | Etheline Berry | 11 | Daughter | — | South Carolina |
| 66 | Don Leslie Berry | 9 | Son | — | South Carolina |
| 67 | Alton Berry | 6 | Son | — | South Carolina |
| 68 | Lee Butler | 47 | Head | Farmer | North Carolina |
| 69 | Vina Butler | 42 | Wife | — | North Carolina |
| 70 | Catherine Butler | 26 | Daughter | — | North Carolina |
| 71 | Hoyt Butler | 16 | Son | — | North Carolina |
| 72 | Evans Butler | 13 | Son | — | North Carolina |
| 73 | Jannie Mae Butler | 9 | Daughter | — | South Carolina |
| 74 | Mamie Batten | 39 | Sister in law | — | North Carolina |
| 75 | Dewey Batten | 17 | Nephew | Laborer | North Carolina |
| 76 | Brooks Brown | 34 | Head | Farmer | South Carolina |
| 77 | Lillian Brown | 28 | Wife | — | New York |
| 78 | Hester Brown | 18 | Step daughter | Laborer | New Jersey |
| 79 | Hayes Brown | 4 | Son | — | South Carolina |
| 80 | Jesse K. Cottingham | 49 | 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)