MJ
Mamie Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, Alabama
Our Model Tree links this Mamie Johnson across the 1930 and 1940 US Censuses in Sumter-County, Alabama (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Female
Daughter
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, Alabama |
| Surname | Johnson |
| Given Name | Mamie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Beat 8 Brewersville |
| 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 Mamie | Age | Birth yr |
|---|---|---|---|---|
| Eunice Johnson | Daughter | — | 5 | ~1935 |
| Bessie Johnson | Daughter | — | 7 | ~1933 |
| Mamie Johnson | Daughter | — | 14 | ~1926 |
| Catherine Johnson | Daughter | — | 4 | ~1936 |
| Lula Johnson | Daughter | — | 11 | ~1929 |
| Lucy Johnson | Daughter | — | 12 | ~1928 |
| Henry Johnson | Head | — | 40 | ~1900 |
| Joe Johnson | Son | — | 1 | ~1939 |
| Johnnie Johnson | Son | — | 13 | ~1927 |
| Laura Johnson | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Sumter, Alabama
Daughter, age 4
Sumter, Alabama · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mamie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Sumter-County, Alabama
Daughter, age 14
Sumter-County, Alabama · implied b. ~1926 — 10 household members
| Surname | Johnson |
| Given Name | Mamie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sumter |
| Highest Grade | No 4 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Mamie Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mamie Johnson
Daughter · 1940 · age 14 · b. ~1926 · Alabama
★ You are viewing this record
Sibling
Lula Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eunice Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bessie Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johnnie Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Johnson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Johnson
Sibling · 1940 · age 1
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, Alabama
Open full size
1940 US Federal Census — Sumter-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00080-00349)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Ingram | 21 | Head | Laborer | Alabama |
| 2 | George Ingram | 17 | Son | Laborer | Alabama |
| 3 | Bessie Ingram | 13 | Daughter | — | Alabama |
| 4 | Susie Ingram | 11 | Daughter | — | Alabama |
| 5 | Charlotte Ingram | 7 | Daughter | — | Alabama |
| 6 | R. P. Ingram | 2 | Son | — | Alabama |
| 7 | John H. Ingram | 0 | Son | — | Alabama |
| 8 | Davidson Ingram | 24 | Head | Farmer | Alabama |
| 9 | Carrie Ingram | 19 | Wife | Farm Wife | Alabama |
| 10 | Moses Ingram | 56 | Head | Farmer | Alabama |
| 11 | Lillian Ingram | 56 | Wife | Farm Wife | Alabama |
| 12 | Henry Ingram | 23 | Son | Farm Hand | Alabama |
| 13 | Clara Jane Ingram | 19 | Daughter | Farm Hand | Alabama |
| 14 | Sam Ingram | 17 | Son | Laborer | Alabama |
| 15 | Gill Ingram | 16 | Son | — | Alabama |
| 16 | Essie Mae Ingram | 13 | Daughter | — | Alabama |
| 17 | Irma Ingram | 12 | Daughter | — | Alabama |
| 18 | Annie Belle Dykes | 10 | Daughter | — | Alabama |
| 19 | Johnnie Eatmon | 3 | Son | — | Alabama |
| 20 | Mary Lee Sanders | 8 | Daughter | — | Alabama |
| 21 | Maggie Williams | 28 | Head | Laborer | Alabama |
| 22 | Jennie Winston | 11 | Daughter | — | Alabama |
| 23 | Cleo Williams | 9 | Son | — | Alabama |
| 24 | Mamie Elder | 6 | Daughter | — | Alabama |
| 25 | Prezell Elder | 5 | Son | — | Alabama |
| 26 | Henry Johnson | 40 | Head | Farmer | Alabama |
| 27 | Laura Johnson | 37 | Wife | Farm Wife | Alabama |
| 28 | Mamie Johnson THIS PERSON | 14 | Daughter | — | Alabama |
| 29 | Johnnie Johnson | 13 | Son | — | Alabama |
| 30 | Lucy Jane Johnson | 12 | Daughter | — | Alabama |
| 31 | Lula Bell Johnson | 11 | Daughter | — | Alabama |
| 32 | Bessie Johnson | 7 | Daughter | — | Alabama |
| 33 | Eunice Lee Johnson | 5 | Daughter | — | Alabama |
| 34 | Catherine Johnson | 4 | Daughter | — | Alabama |
| 35 | Joe Nathan Johnson | 1 | Son | — | Alabama |
| 36 | William Lake | 34 | Head | Farmer | Alabama |
| 37 | Offie Lee Lake | 28 | Wife | Farm Wife | Alabama |
| 38 | Minnie Williams | 28 | Sister-in-law | Laborer | Alabama |
| 39 | Herbert Henderson | 58 | Father-in-law | Laborer | Alabama |
| 40 | Fannie Henderson | 58 | Mother-in-law | Laborer | Alabama |
Related Census Records
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)