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Mary Mckenzie — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, South Carolina
Our Model Tree links this Mary Mckenzie across the 1930 and 1940 US Censuses in Sumter-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 11-person household.
Age 11
b. ~1929
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, South Carolina |
| Surname | McKenzie |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter township |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Sumter Township |
| Est. Birth Year | ~1929 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Frances Mckenzie | Daughter | — | 2 | ~1938 |
| Dorothy Mckenzie | Daughter | — | 1 | ~1939 |
| Nellie Mckenzie | Daughter | — | 10 | ~1930 |
| Shelby Mckenzie | Daughter | — | 2 | ~1938 |
| Lewis Brown | Other | — | 24 | ~1916 |
| Reno Mckenzie | Head | — | 47 | ~1893 |
| Melvin Howard | Other | — | 19 | ~1921 |
| Irene Mckenzie | Spouse | — | 34 | ~1906 |
| Vindola Mckenzie | Daughter | — | 7 | ~1933 |
| Mary Mckenzie | Daughter | — | 11 | ~1929 |
| Agnes Mckenzie | Daughter | — | 4 | ~1936 |
Census Appearances
1930
Sumter, South …
Daughter, age 1
Sumter, South Carolina · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenzie |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| 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
Sumter-County, South …
Daughter, age 11
Sumter-County, South Carolina · implied b. ~1929 — 11 household members
| Surname | McKenzie |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter township |
| 1935 Residence (County) | Sumter |
| Highest Grade | 5 |
| 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 Mckenzie across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckenzie
Daughter · 1940 · age 11 · b. ~1929 · South Carolina
★ You are viewing this record
Sibling
Dorothy Mckenzie
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Mckenzie
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vindola Mckenzie
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Mckenzie
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Mckenzie
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shelby Mckenzie
Sibling · 1940 · age 2
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 — Sumter-County, South Carolina
Open full size
1940 US Federal Census — Sumter-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03842-00466)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Betty | 8 | Daughter | — | South Carolina |
| 2 | Helen | 5 | Daughter | — | South Carolina |
| 3 | Janet | 2 | Daughter | — | South Carolina |
| 4 | Reno Mckenzie | 47 | Head | Clerk | South Carolina |
| 5 | Irene Mckenzie | 34 | Wife | — | South Carolina |
| 6 | Mary Mckenzie THIS PERSON | 11 | Daughter | — | South Carolina |
| 7 | Nellie Mckenzie | 10 | Daughter | — | South Carolina |
| 8 | Vindola Mckenzie | 7 | Daughter | — | South Carolina |
| 9 | Agnes Mckenzie | 4 | Daughter | — | South Carolina |
| 10 | Frances Mckenzie | 2 | Daughter | — | South Carolina |
| 11 | Shelby Mckenzie | 2 | Daughter | — | South Carolina |
| 12 | Dorothy Mckenzie | 1 | Daughter | — | South Carolina |
| 13 | Lewis Brown | 24 | Lodger | Laborer | South Carolina |
| 14 | Melvin Howard | 19 | Lodger | Laborer | South Carolina |
| 15 | Mick Glasscock | 43 | Head | Mechanic | South Carolina |
| 16 | Coralee Glasscock | 34 | Wife | — | South Carolina |
| 17 | Helen Glasscock | 16 | Daughter | — | South Carolina |
| 18 | Bobbie Glasscock | 13 | Daughter | — | South Carolina |
| 19 | Joyce Glasscock | 7 | Daughter | — | South Carolina |
| 20 | George Neal | 36 | Head | Laborer | South Carolina |
| 21 | Pauline Neal | 40 | Wife | — | South Carolina |
| 22 | Bertha Neal | 20 | Daughter | Office Girl | South Carolina |
| 23 | Charles Neal | 7 | Son | — | South Carolina |
| 24 | Michel Neal | 3 | Son | — | South Carolina |
| 25 | Mervin | 20 | Lodger | Laborer | South Carolina |
| 26 | George Nemiter | 27 | Head | Manager | Arkansas |
| 27 | Nora Nemiter | 26 | Wife | — | West Virginia |
| 28 | Ernest Nemiter | 3 | Son | — | West Virginia |
| 29 | Jack Johnston | 26 | Head | Clerk | Georgia |
| 30 | Lessie Johnston | 20 | Wife | — | South Carolina |
| 31 | Sherry Johnston | 3 | Daughter | — | South Carolina |
| 32 | Loretta Johnston | 0 | Daughter | — | South Carolina |
| 33 | Claude | 57 | Mother | — | Georgia |
| 34 | Vinita | 17 | Brother | Cabinet Maker | South Carolina |
| 35 | Jack Pratt | 45 | Head | — | South Carolina |
| 36 | Essie Pratt | 33 | Wife | Manager | South Carolina |
| 37 | Adger | 30 | Brother | Manager | South Carolina |
| 38 | Elbie | 14 | Niece | — | South Carolina |
| 39 | George Powell | 32 | Head | Laborer | South Carolina |
| 40 | Blanche Powell | 26 | Wife | — | 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)