MH
Mary Harper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Coahoma-County, Mississippi
Our Model Tree links this Mary Harper across the 1930 and 1940 US Censuses in Coahoma-County, Mississippi (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Female
Daughter
Born: Mississippi
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Coahoma-County, Mississippi |
| Surname | Harper |
| Given Name | Mary Pearl |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 3 |
| 1935 Residence (County) | Coahoma |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Township / Ward | Beat 3 |
| Est. Birth Year | ~1926 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ernestine Harper | Daughter | — | 6 | ~1934 |
| Mary Harper | Daughter | — | 14 | ~1926 |
| Roberta Harper | Daughter | — | 16 | ~1924 |
| Rosabelle Harper | Daughter | — | 4 | ~1936 |
| Will Harper | Head | — | 45 | ~1895 |
| Ussi Harper | Son | — | 12 | ~1928 |
| Calvin Harper | Son | — | 9 | ~1931 |
| Cleveland Harper | Son | — | 3 | ~1937 |
| Oscar Harper | Son | — | 23 | ~1917 |
| Georgia Harper | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Coahoma, Mississippi
Daughter, age 5
Coahoma, Mississippi · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Mary Pearl |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Age at First Marriage | 7 |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read/Write | No |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Coahoma-County, Mississippi
Daughter, age 14
Coahoma-County, Mississippi · implied b. ~1926 — 10 household members
| Surname | Harper |
| Given Name | Mary Pearl |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 3 |
| 1935 Residence (County) | Coahoma |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 Harper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Harper
Daughter · 1940 · age 14 · b. ~1926 · Mississippi
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Sibling
Calvin Harper
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosabelle Harper
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Oscar Harper
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernestine Harper
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roberta Harper
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ussi Harper
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cleveland Harper
Sibling · 1940 · age 3
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 — Coahoma-County, Mississippi
Open full size
1940 US Federal Census — Coahoma-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02016-00912)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Mcclinton | 55 | Head | Farmer | Mississippi |
| 2 | Hattie Ann Mcclinton | 50 | Wife | — | Mississippi |
| 3 | Doris Rosie Lee Mcclinton | 12 | Daughter | — | Mississippi |
| 4 | Oscar Harrar | 53 | Head | Farmer | Mississippi |
| 5 | Lucille Harrar | 29 | Wife | — | Mississippi |
| 6 | Will Harper | 45 | Head | Farmer | Mississippi |
| 7 | Georgia Harper | 41 | Wife | — | Mississippi |
| 8 | Oscar Harper | 23 | Son | Farm Laborer | Mississippi |
| 9 | Roberta Harper | 16 | Daughter | Farm Laborer | Mississippi |
| 10 | Mary Pearl Harper THIS PERSON | 14 | Daughter | — | Mississippi |
| 11 | Calvin Harper | 9 | Son | — | Mississippi |
| 12 | Ussi Harper | 12 | Son | — | Mississippi |
| 13 | Ernestine Harper | 6 | Daughter | — | Mississippi |
| 14 | Rosabelle Harper | 4 | Daughter | — | Mississippi |
| 15 | Cleveland Harper | 3 | Son | — | Mississippi |
| 16 | George Lee | 45 | Head | Farmer | Mississippi |
| 17 | Mattie Lee | 40 | Wife | — | Louisiana |
| 18 | Mose Strong | 27 | Head | Farmer | Mississippi |
| 19 | Ada Strong | 26 | Wife | — | Mississippi |
| 20 | Alex Barker | 35 | Head | Farmer | Mississippi |
| 21 | Annie Barker | 23 | Wife | — | Mississippi |
| 22 | James Willis | 32 | Head | Farmer | Mississippi |
| 23 | Leola Willis | 32 | Wife | — | Mississippi |
| 24 | Loyd Ladell | 28 | Head | Farmer | Mississippi |
| 25 | Will Helms | 65 | Head | Farmer | Mississippi |
| 26 | Carry Helms | 59 | Wife | — | Mississippi |
| 27 | Robert Anderson | 27 | Head | Farmer | Mississippi |
| 28 | Leanna Anderson | 25 | Wife | — | Mississippi |
| 29 | Sara Anderson | 45 | Head | Farmer | Mississippi |
| 30 | Richard Anderson | 30 | Head | Farm Laborer | Mississippi |
| 31 | Willie Lou Anderson | 13 | Wife | — | Mississippi |
| 32 | John Harper | 74 | Father-in-law | Farmer | Mississippi |
| 33 | Maggie Lee Jackson | 33 | Head | Farmer | Texas |
| 34 | Irene Jackson | 13 | Daughter | — | Texas |
| 35 | Richard Anderson | 20 | Head | Day Laborer | Mississippi |
| 36 | Willie Anderson | 25 | Wife | Day Laborer | Mississippi |
| 37 | Pere Fields | 27 | Head | Farmer | Mississippi |
| 38 | Ida Lee Fields | 19 | Wife | — | Mississippi |
| 39 | Dessa May Fields | 2 | Daughter | — | Mississippi |
| 40 | Earline Fields | 1 | Daughter | — | Mississippi |
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)