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Mary Ball — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Imperial, California
Our Model Tree links this Mary Ball across the 1930 and 1940 US Censuses in Imperial, California (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 0
b. ~1930
Female
Daughter
Born: Arizona
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Imperial, California |
| Surname | Ball |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Additional Details | |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Laguna Township Part Of |
| Est. Birth Year | ~1930 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margie Ball | Daughter | — | 3 | ~1927 |
| Katie Ball | Daughter | — | 13 | ~1917 |
| Mary Ball | Daughter | — | ~1930 | |
| Charles Ball | Head | — | 39 | ~1891 |
| George Ball | Son | — | 12 | ~1918 |
| Fred Ball | Son | — | 2 | ~1928 |
| Amos Ball | Son | — | 6 | ~1924 |
| Myrtle Ball | Spouse | — | 34 | ~1896 |
Census Appearances
1930
Imperial, California
Daughter, age
Imperial, California · implied b. ~1930 — 8 household members
| Surname | Ball |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Imperial-County, California
Daughter, age 10
Imperial-County, California · implied b. ~1930 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bell |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | 4 |
| 1935 Residence (County) | Imperial |
| Highest Grade | No 2 |
| 1935 Residence | California |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 0 · b. ~1930 · California
★ You are viewing this record
Sibling
George Ball
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Ball
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Amos Ball
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margie Ball
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katie Ball
Sibling · 1930 · age 13
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 — Imperial, California
Open full size
1930 US Federal Census — Imperial, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel119:0838)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas E White | 59 | Head | Farmer | Tennessee |
| 2 | Florence H Sherman | 52 | Servant | — | Texas |
| 3 | Gladys Armstrong | 28 | Lodger | Servant | Texas |
| 4 | Geo. J Sherman | 18 | Lodger | Laborer | Texas |
| 5 | Daniel Sherman | 16 | Boarder | Laborer | Texas |
| 6 | Harold Sherman | 13 | Boarder | — | Texas |
| 7 | Junell Sherman | 8 | Boarder | — | Texas |
| 8 | Wylah Armstrong | 6 | Boarder | — | Texas |
| 9 | Delton Armstrong | 2 | Boarder | — | Texas |
| 10 | Josephine C Shreves | 38 | Boarder | Laborer | West Virginia |
| 11 | George Caswell | 51 | Head | Farmer | Pennsylvania |
| 12 | Jessie F Caswell | 49 | Wife | — | Iowa |
| 13 | Virginia B Caswell | 11 | Daughter | — | Arizona |
| 14 | Clyde S Caswell | 25 | Head | — | Pennsylvania |
| 15 | Charles M Ketchum | 71 | Head | Farmer | Louisiana |
| 16 | James F Ketchum | 62 | Wife | — | Texas |
| 17 | Louis E Ketchum | 21 | Son | Laborer | Texas |
| 18 | James F Ketchum | 37 | Head | Farmer | Texas |
| 19 | Bertha D Ketchum | 32 | Wife | — | Texas |
| 20 | Chester Beasley | 14 | Step-son | — | Texas |
| 21 | Virginia F Ketchum | 5 | Daughter | — | Arizona |
| 22 | James E Ketchum | 3 | Son | — | Arizona |
| 23 | William S Ketchum | 1 | Son | — | Arizona |
| 24 | Charles W Ball | 39 | Head | Blacksmith | Texas |
| 25 | Myrtle Ball | 34 | Wife | — | Texas |
| 26 | Katie Ball | 13 | Daughter | — | Texas |
| 27 | George W Ball | 12 | Son | — | Texas |
| 28 | Amos Ball | 6 | Son | — | Arizona |
| 29 | Margie Ball | 3 | Daughter | — | Arizona |
| 30 | Fred Ball | 2 | Son | — | California |
| 31 | Mary J Ball THIS PERSON | 0 | Daughter | — | Arizona |
| 32 | John O Savage | 35 | Head | Farmer | Texas |
| 33 | Gladys E Savage | 20 | Wife | — | Arkansas |
| 34 | Kenneth O Savage | 1 | Son | — | California |
| 35 | James M Taylor | 49 | Head | Farmer | Mississippi |
| 36 | Annie J Taylor | 47 | Wife | — | Texas |
| 37 | L. D. Taylor | 16 | Son | — | Oklahoma |
| 38 | Relford Taylor | 12 | Son | — | Oklahoma |
| 39 | Jack Taylor | 6 | Son | — | Oklahoma |
| 40 | Walter S Cooper | 48 | Head | Farmer | Kansas |
| 41 | Cora T Cooper | 40 | Wife | — | Mississippi |
| 42 | Leonard J Cooper | 17 | Son | — | Texas |
| 43 | John W Pyburn | 67 | Head | Farmer | Arkansas |
| 44 | Luella Pyburn | 63 | Wife | — | Arkansas |
| 45 | Herbert M Pyburn | 44 | Head | Farmer | Arkansas |
| 46 | Effie M Pyburn | 41 | Wife | — | Texas |
| 47 | John B Pyburn | 19 | Son | Laborer | Oklahoma |
| 48 | Phylis M Pyburn | 17 | Daughter | — | Oklahoma |
| 49 | Lyman L Pyburn | 12 | Son | — | Oklahoma |
| 50 | Herbert M Pyburn | 10 | Son | — | Oklahoma |
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)