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Mary Ball — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this Mary Ball across the 1930 and 1940 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 10-person household.
Age 7
b. ~1923
Female
Daughter
Born: Missouri
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1923 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bernice Ball | Daughter | — | 21 | ~1909 |
| Mary Ball | Daughter | — | 7 | ~1923 |
| Bernice Ball | Head | — | 40 | ~1890 |
| Joseph Ball | Son | — | 5 | ~1925 |
| John Ball | Son | — | 9 | ~1921 |
| William Ball | Son | — | 15 | ~1915 |
| Richard Ball | Son | — | 13 | ~1917 |
| Robert Ball | Son | — | 18 | ~1912 |
| James Ball | Son | — | 23 | ~1907 |
| Edward Ball | Son | — | 11 | ~1919 |
Census Appearances
1930
St Louis, …
Daughter, age 7
St Louis, Missouri · implied b. ~1923 — 10 household members
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 18
St.-Louis-City-County, Missouri · implied b. ~1922 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bulla |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Louis City |
| 1935 Residence (County) | St Louis City |
| Occupation | New Worker |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Ball
Daughter · 1930 · age 7 · b. ~1923 · Missouri
★ You are viewing this record
Sibling
Edward Ball
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Ball
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Ball
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Ball
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Ball
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Ball
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Ball
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Ball
Sibling · 1930 · age 9
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 — St Louis, Missouri
Open full size
1930 US Federal Census — St Louis, Missouri
Page Contents
50 people indexed on this census page (ia:1930:missouricensus00reel1237:0047)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hollens | None | — | — | — |
| 2 | Bernice Ball | 40 | Head | Nurse | Missouri |
| 3 | Bernice Ball | 21 | Daughter | Stenographer | Missouri |
| 4 | James Ball | 23 | Son | Salesman | Missouri |
| 5 | Robert Ball | 18 | Son | Metal Worker | Missouri |
| 6 | William Ball | 15 | Son | — | Missouri |
| 7 | Richard Ball | 13 | Son | — | Missouri |
| 8 | Edward Ball | 11 | Son | — | Missouri |
| 9 | John Ball | 9 | Son | — | Missouri |
| 10 | Mary Ball THIS PERSON | 7 | Daughter | — | Missouri |
| 11 | Joseph Ball | 5 | Son | — | Missouri |
| 12 | Richard Peterson | 27 | Head | Mechanic | Nebraska |
| 13 | Loretta Peterson | 23 | Wife | Assembler | Missouri |
| 14 | Richard Peterson | 1 | Son | — | Missouri |
| 15 | James Boyle | 26 | Head | Printer | Missouri |
| 16 | Mildred Boyle | 26 | Wife | Office Work | Missouri |
| 17 | James Boyle | 4 | Son | — | Missouri |
| 18 | Mary Boyle | 2 | Daughter | — | Missouri |
| 19 | Robert Boyle | 1 | Son | — | Missouri |
| 20 | Clyde Boyle | 22 | Brother | Launderer | Missouri |
| 21 | Clyde Boyle | 14 | Brother | — | Missouri |
| 22 | Sydney Surby | 56 | Head | Laborer | Missouri |
| 23 | Mary Surby | 50 | Wife | — | Missouri |
| 24 | Sydney Surby | 21 | Son | Office Work | Missouri |
| 25 | John Rupp | 34 | Head | — | Missouri |
| 26 | Mary Rupp | 34 | Wife | Saleslady | Ireland |
| 27 | John Patison | 27 | Head | — | Missouri |
| 28 | Mary Patison | 24 | Wife | — | Missouri |
| 29 | John Patison | 1 | Son | — | Missouri |
| 30 | Emil Bade | 27 | Head | Machinist | Missouri |
| 31 | Alice Bade | 23 | Wife | — | Missouri |
| 32 | Opal Miller | 30 | Lodger | Bookkeeper | Missouri |
| 33 | Walter Fowler | 21 | Head | Sheet Metal | Illinois |
| 34 | Lillian Fowler | 23 | Wife | — | Missouri |
| 35 | Lillian Fowler | 1 | Daughter | — | Missouri |
| 36 | Francis Fowler | 0 | Son | — | Missouri |
| 37 | James Phelps | 24 | Head | — | Missouri |
| 38 | Mary Phelps | 20 | Wife | Laborer | Missouri |
| 39 | James Phelps | 3 | Son | — | Missouri |
| 40 | Robert Phelps | 1 | Son | — | Missouri |
| 41 | William Phelps | 0 | Son | — | Missouri |
| 42 | John Phelps | 20 | Brother | Pharmacist | Illinois |
| 43 | Robert Phelps | 18 | Brother | — | Illinois |
| 44 | R. E. Marr | 54 | Head | Cashier | Tennessee |
| 45 | E. Marr | 45 | Wife | Waitress | Arkansas |
| 46 | B. Marr | 23 | Son | Operator | Arkansas |
| 47 | D. Marr | 19 | Son | Bookkeeper | Arkansas |
| 48 | V. Marr | 14 | Son | — | Arkansas |
| 49 | E. Marr | 12 | Son | — | Arkansas |
| 50 | E. Marr | 2 | Daughter | — | Arkansas |
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)