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Mary Ballard — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Jefferson, Montana
Our Model Tree links this Mary Ballard across the 1920 and 1930 US Censuses in Jefferson, Montana (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 10-person household.
Age 16
b. ~1914
Female
Daughter
Born: Montana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Jefferson, Montana |
| Surname | Ballard |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Kentucky |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Nigger Hollow District |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| George Ballard | Son | — | 9 | ~1921 |
| Billie Ballard | Daughter | — | 14 | ~1916 |
| Lillie Ballard | Spouse | — | 44 | ~1886 |
| George Ballard | Head | — | 48 | ~1882 |
| Mary Ballard | Daughter | — | 16 | ~1914 |
| Forrest Ballard | Son | — | 6 | ~1924 |
| Jessie Ballard | Daughter | — | 7 | ~1923 |
| Jack Ballard | Son | — | 8 | ~1922 |
| Maude Ballard | Daughter | — | 15 | ~1915 |
| Walter Ballard | Son | — | 5 | ~1925 |
Census Appearances
1920
Jefferson, Montana
Daughter, age 6
Jefferson, Montana · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ballard |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Jefferson, Montana
Daughter, age 16
Jefferson, Montana · implied b. ~1914 — 10 household members
| Surname | Ballard |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Ballard across 2 US Census years (1920 and 1930) in Jefferson, Montana, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Ballard
Daughter · 1930 · age 16 · b. ~1914 · Montana
★ You are viewing this record
Sibling
Jack Ballard
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Ballard
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billie Ballard
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Ballard
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maude Ballard
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Forrest Ballard
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Ballard
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 — Jefferson, Montana
Open full size
1930 US Federal Census — Jefferson, Montana
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1257unit:0562)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E. Shipman | 78 | Head | Farmer | Montana |
| 2 | James S. Shipman | 73 | Head | Farmer | Montana |
| 3 | John E. Shipman | 72 | Father | — | North Carolina |
| 4 | Laura Shipman | 62 | Mother | — | North Carolina |
| 5 | James B. Shipman | 67 | Uncle | — | North Carolina |
| 6 | Phoebe A. Shipman | 70 | Sister | — | Montana |
| 7 | Vernon B. Shipman | 23 | Nephew | Farm Hand | Montana |
| 8 | Stanley Rose | 40 | Head | Farmer | Virginia |
| 9 | George L. Ballard | 48 | Head | Farmer | Montana |
| 10 | Lillie B. Ballard | 44 | Wife | — | Kentucky |
| 11 | Mary R. Ballard THIS PERSON | 16 | Daughter | — | Montana |
| 12 | Maude B. Ballard | 15 | Daughter | — | Montana |
| 13 | Billie Ballard | 14 | Daughter | — | Montana |
| 14 | George L. Jr. Ballard | 9 | Son | — | Montana |
| 15 | Jack T. Ballard | 8 | Son | — | Montana |
| 16 | Jessie Ballard | 7 | Daughter | — | Montana |
| 17 | Walter J. Ballard | 5 | Son | — | Montana |
| 18 | Forrest G. Ballard | 6 | Son | — | Montana |
| 19 | — | None | — | — | — |
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| 50 | — | None | — | — | — |
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)