MU
Mary Underwood — 1940 US Census Record
Model Tree available1940 United States Federal Census · Perry-County, Alabama
Our Model Tree links this Mary Underwood across the 1920, 1930 and 1940 US Censuses in Perry-County, Alabama (XGBoost, ~Confirmed), with identified parents Henry & Isaac — first a daughter (b.~1920), then head of a 11-person household.
Age 20
b. ~1920
Female
Daughter
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Perry-County, Alabama |
| Surname | Underwood |
| Given Name | Mary Ella |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | 19-70 |
| 1935 Residence (County) | Perry |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 8 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Laborer |
| Township / Ward | 1970 |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| Robert Underwood | Son | — | 11 | ~1929 |
| Human Underwood | Son | — | 7 | ~1933 |
| James Underwood | Other | — | 1 | ~1939 |
| Jimmie Underwood | Son | — | 18 | ~1922 |
| Martha Underwood | Other | — | 1 | ~1939 |
| Mary Underwood | Daughter | — | 20 | ~1920 |
| Ara Underwood | Daughter | — | 10 | ~1930 |
| Eli Underwood | Son | — | 14 | ~1926 |
| Lucindy Underwood | Spouse | — | 42 | ~1898 |
| Luella Underwood | Daughter | — | 16 | ~1924 |
| Jimmie Underwood | Head | — | 45 | ~1895 |
Census Appearances
1920
Perry, Alabama
Daughter, age
Perry, Alabama · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Underwood |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Perry, Alabama
Daughter, age 10
Perry, Alabama · implied b. ~1920 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Underwood |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Farm Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Perry-County, Alabama
Daughter, age 20
Perry-County, Alabama · implied b. ~1920 — 11 household members
| Surname | Underwood |
| Given Name | Mary Ella |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | 19-70 |
| 1935 Residence (County) | Perry |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 8 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| 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 Mary Underwood across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Underwood (~0.92 confidence) and father Isaac Underwood (~0.92 confidence) and mother Annie Underwood (~0.92 confidence) and mother Annie Underwood (~0.92 confidence) and father Jimmie Underwood (~0.92 confidence) and mother Lucindy Underwood (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Underwood
b. ~1857
Source father
● Household
· direct · ~0.92
Father
Isaac Underwood
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Annie Underwood
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Annie Underwood
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Jimmie Underwood
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Lucindy Underwood
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Underwood
Daughter · 1940 · age 20 · b. ~1920 · Alabama
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Sibling
Ara Underwood
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Underwood
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Luella Underwood
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Human Underwood
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jimmie Underwood
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eli Underwood
Sibling · 1940 · age 14
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 — Perry-County, Alabama
Open full size
1940 US Federal Census — Perry-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00073-00132)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy Sanders | 26 | Head | Tractor Driver | Alabama |
| 42 | Estelle Sanders | 25 | Wife | Laborer | Alabama |
| 43 | Major Sanders | 63 | Head | Farmer | Alabama |
| 44 | Sarah Sanders | 53 | Wife | Laundress | Alabama |
| 45 | Ira Lee Sanders | 20 | Son | Laborer | Alabama |
| 46 | Cornelius Knox | 13 | Grandchild | — | Alabama |
| 47 | John Knox | 12 | Grandchild | — | Alabama |
| 48 | Edvah Alice Knox | 10 | Grandchild | — | Alabama |
| 49 | Tommie Howze | 55 | Head | Farmer | Alabama |
| 50 | Lucy Ann Howze | 52 | Wife | Laborer | Alabama |
| 51 | Tommie Jr Howze | 23 | Son | Laborer | Alabama |
| 52 | Mary Rosa Howze | 20 | Daughter | Laborer | Alabama |
| 53 | Moses Howze | 18 | Son | Laborer | Alabama |
| 54 | Johnny Howze | 16 | Son | Laborer | Alabama |
| 55 | Marvin Howze | 14 | Son | Laborer | Alabama |
| 56 | Earl Howze | 12 | Son | — | Alabama |
| 57 | John Willie Jones | 4 | Grandchild | — | Alabama |
| 58 | Beatrice Willie Jones | 2 | Grandchild | — | Alabama |
| 59 | Charles David Lee | 2 | Grandchild | — | Alabama |
| 60 | John Arthur Lee | 30 | Head | Laborer | Alabama |
| 61 | Rosa Lee | 24 | Wife | Laborer | Alabama |
| 62 | John Arthur Jr Lee | 2 | Son | — | Alabama |
| 63 | Robert Underwood | 70 | Head | Farmer | Alabama |
| 64 | Mary Underwood | 65 | Wife | Laborer | Alabama |
| 65 | Jimmie Underwood | 45 | Head | Farmer | Alabama |
| 66 | Lucindy Underwood | 42 | Wife | Laborer | Alabama |
| 67 | Mary Ella Underwood THIS PERSON | 20 | Daughter | Laborer | Alabama |
| 68 | Jimmie Underwood | 18 | Son | Laborer | Alabama |
| 69 | Luella Underwood | 16 | Daughter | Laborer | Alabama |
| 70 | Eli Underwood | 14 | Son | Laborer | Alabama |
| 71 | Robert Underwood | 11 | Son | — | Alabama |
| 72 | Ara Da Underwood | 10 | Daughter | — | Alabama |
| 73 | Human Underwood | 7 | Son | — | Alabama |
| 74 | Martha Lou Underwood | 1 | Grandchild | — | Alabama |
| 75 | James Edward Underwood | 1 | Grandchild | — | Alabama |
| 76 | Sidney Jones | 42 | Head | Laborer | Alabama |
| 77 | Maybelle Jones | 32 | Wife | Laborer | Alabama |
| 78 | Jerdon Amzi Jones | 13 | Step-son | — | Alabama |
| 79 | Ed Jones | 12 | Step-son | — | Alabama |
| 80 | Luther Ford | 41 | Head | Laborer | Alabama |
Pedigree Summary
Mary + 6 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)