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Mary Ball — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Montgomery, Alabama
Our Model Tree links this Mary Ball across the 1920 and 1930 US Censuses in Montgomery, Alabama (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 9-person household.
Age 20
b. ~1910
Female
Daughter
Born: Alabama
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Montgomery, Alabama |
| Surname | Ball |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Montgomery City |
| Est. Birth Year | ~1910 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Ball | Daughter | — | 14 | ~1916 |
| Mary Ball | Daughter | — | 20 | ~1910 |
| James Ball | Head | — | 46 | ~1884 |
| John Oliver | Other | — | 68 | ~1862 |
| Earl Ball | Son | — | 4 | ~1926 |
| John Ball | Son | — | 7 | ~1923 |
| Fernand Ball | Son | — | 16 | ~1914 |
| James Ball | Son | — | 11 | ~1919 |
| Oliver Ball | Spouse | — | 42 | ~1888 |
Census Appearances
1920
Macon, Alabama
Daughter, age 9
Macon, Alabama · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Montgomery, Alabama
Daughter, age 20
Montgomery, Alabama · implied b. ~1910 — 9 household members
| Surname | Ball |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| 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 Ball across 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Ball
Daughter · 1930 · age 20 · b. ~1910 · Alabama
★ You are viewing this record
Sibling
Fernand Ball
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Ball
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Ball
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Ball
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Ball
Sibling · 1930 · 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
1930 US Federal Census — Montgomery, Alabama
Open full size
1930 US Federal Census — Montgomery, Alabama
Page Contents
50 people indexed on this census page (ia:1930:15thcensus43usce:0742)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Owen | 60 | Head | Servant | Alabama |
| 2 | James C. Forbes | 46 | Head | Merchant | Alabama |
| 3 | Morris Joiner | 26 | Head | Fireman | Georgia |
| 4 | Mabel Joiner | 25 | Wife | — | Alabama |
| 5 | Doris Joiner | 2 | Daughter | — | Alabama |
| 6 | Ocie Wone | 30 | Head | Machinist | Alabama |
| 7 | Dallie Wone | 28 | Wife | — | Alabama |
| 8 | Elaine Wone | 10 | Daughter | — | Alabama |
| 9 | Laura M. Wone | 5 | Daughter | — | Alabama |
| 10 | Carl Wone | 2 | Son | — | Alabama |
| 11 | James B. Ball | 46 | Head | — | Alabama |
| 12 | Oliver Ball | 42 | Wife | Dairyman | Alabama |
| 13 | Mary A. Ball THIS PERSON | 20 | Daughter | — | Alabama |
| 14 | Fernand Ball | 16 | Son | — | Alabama |
| 15 | Margaret Ball | 14 | Daughter | — | Alabama |
| 16 | James B. Jr. Ball | 11 | Son | — | Alabama |
| 17 | John W. Ball | 7 | Son | — | Alabama |
| 18 | Earl Ball | 4 | Son | — | Alabama |
| 19 | John H. Oliver | 68 | Father-in-law | Janitor | Alabama |
| 20 | Elijah Greene | 32 | Head | Laborer | Alabama |
| 21 | Carrie W. Greene | 31 | Wife | — | Alabama |
| 22 | Patricia Greene | 7 | Daughter | — | Alabama |
| 23 | Bernice Greene | 6 | Daughter | — | Alabama |
| 24 | Rosie L. Greene | 5 | Daughter | — | Alabama |
| 25 | Eddie Greene | 3 | Son | — | Alabama |
| 26 | Annie L. Greene | 2 | Daughter | — | Alabama |
| 27 | Samuel Bradley | 20 | Head | Deliveryman | Alabama |
| 28 | Mary Bradley | 27 | Wife | Cook | Alabama |
| 29 | Early W. Smith | 65 | Head | Clergyman | Alabama |
| 30 | Edith Smith | 50 | Wife | — | Alabama |
| 31 | Nettie Smith | 22 | Daughter | — | Alabama |
| 32 | Lillian Smith | 18 | Daughter | — | Alabama |
| 33 | John C. Smith | 15 | Son | — | Alabama |
| 34 | Odelle Smith | 12 | Daughter | — | Alabama |
| 35 | Walter E. Smith | 10 | Daughter | — | Alabama |
| 36 | Early Jr. Smith | 35 | Son | Servant | Alabama |
| 37 | Eugene Smith | 29 | Son | Clothes Presser | Alabama |
| 38 | Virginia Smith | 18 | Daughter-in-law | — | Alabama |
| 39 | Alberta Mallory | 38 | Head | — | Alabama |
| 40 | Arthur Mallory | 21 | Son | — | Alabama |
| 41 | Judge Mallory | 18 | Son | — | Alabama |
| 42 | Dink Mallory | 16 | Son | — | Alabama |
| 43 | Rebecca Elderberry | 52 | Mother | — | Alabama |
| 44 | Victoria Brown | 85 | Mother | — | Alabama |
| 45 | Marie West | 40 | Head | Cook | Alabama |
| 46 | Willie M. West | 9 | Daughter | — | Alabama |
| 47 | James West | 19 | Son | — | Alabama |
| 48 | Willie West | 17 | Son | — | Alabama |
| 49 | Margaret Johnson | 20 | Daughter | — | Alabama |
| 50 | Elizabeth Johnson | 5 | Daughter | — | Alabama |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)