MF
Mary Frey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Knox, Indiana
Our Model Tree links this Mary Frey across the 1920 and 1930 US Censuses in Knox, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 11-person household.
Age 18
b. ~1912
Female
Daughter
Born: Indiana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Knox, Indiana |
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Johnson Township Pt 2 |
| Est. Birth Year | ~1912 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lena Frey | Spouse | — | 43 | ~1887 |
| Agnes Frey | Daughter | — | 20 | ~1910 |
| Leo Frey | Son | — | 15 | ~1915 |
| Hubert Frey | Son | — | 11 | ~1919 |
| Clarence Frey | Son | — | 8 | ~1922 |
| Dorothy Frey | Daughter | — | 7 | ~1923 |
| Mary Frey | Daughter | — | 18 | ~1912 |
| Helen Frey | Daughter | — | 12 | ~1918 |
| Henry Frey | Son | — | 14 | ~1916 |
| Lawrence Frey | Son | — | 17 | ~1913 |
| Wm Frey | Head | — | 42 | ~1888 |
Census Appearances
1920
Knox, Indiana
Daughter, age 8
Knox, Indiana · implied b. ~1912 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Knox, Indiana
Daughter, age 18
Knox, Indiana · implied b. ~1912 — 11 household members
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Frey across 2 US Census years (1920 and 1930) in Knox, Indiana, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frey
Daughter · 1930 · age 18 · b. ~1912 · Indiana
★ You are viewing this record
Sibling
Leo Frey
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Frey
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Frey
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Frey
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hubert Frey
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Frey
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Frey
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Frey
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 — Knox, Indiana
Open full size
1930 US Federal Census — Knox, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel596:0626)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Primis Water | 7 | son | None | Indiana |
| 2 | Billy Water | 3 | son | None | Indiana |
| 3 | Carrie August | 30 | head | Farmer | Indiana |
| 4 | Mary Louise August | 30 | wife | None | Indiana |
| 5 | Bernard August | 10 | son | None | Indiana |
| 6 | Raphel August | 8 | son | None | Indiana |
| 7 | Francis August | 6 | son | None | Indiana |
| 8 | Arral August | 3 | son | None | Indiana |
| 9 | Harold August | 0 | son | None | Indiana |
| 10 | John Leck | 38 | head | Farmer | Indiana |
| 11 | Mary Leck | 32 | wife | None | Indiana |
| 12 | Herman Leck | 14 | son | None | Indiana |
| 13 | Irene Leck | 13 | daughter | None | Indiana |
| 14 | Annie Leck | 12 | daughter | None | Indiana |
| 15 | Lucile Leck | 11 | daughter | None | Indiana |
| 16 | Cletus Leck | 9 | son | None | Indiana |
| 17 | Leo Leck | 8 | son | None | Indiana |
| 18 | John Jr. Leck | 7 | son | None | Indiana |
| 19 | Eugene Leck | 5 | son | None | Indiana |
| 20 | Robert Leck | 3 | son | None | Indiana |
| 21 | Margurete Leck | 2 | daughter | None | Indiana |
| 22 | Pauline Leck | 1 | daughter | None | Indiana |
| 23 | John Ruple | 21 | lodger | Farm Hand | Indiana |
| 24 | J. Wm. Gravel | 56 | head | Day Laborer | Indiana |
| 25 | Wm. Frey | 42 | head | Farmer | Indiana |
| 26 | Lena Frey | 43 | wife | None | Indiana |
| 27 | Agnes Frey | 20 | daughter | None | Indiana |
| 28 | Mary Frey THIS PERSON | 18 | daughter | None | Indiana |
| 29 | Lawrence Frey | 17 | son | Farm Laborer | Indiana |
| 30 | Leo Frey | 15 | son | None | Indiana |
| 31 | Henry Frey | 14 | son | None | Indiana |
| 32 | Helen Frey | 12 | daughter | None | Indiana |
| 33 | Hubert Frey | 11 | son | None | Indiana |
| 34 | Clarence Frey | 8 | son | None | Indiana |
| 35 | Dorothy Frey | 7 | daughter | None | Indiana |
| 36 | Anthony Frey | 47 | head | Farmer | Indiana |
| 37 | Josephine Frey | 46 | wife | None | Indiana |
| 38 | Anthony Frey | 19 | son | Farm Laborer | Indiana |
| 39 | Anna Louise Frey | 17 | daughter | None | Indiana |
| 40 | Pauline Frey | 16 | daughter | None | Indiana |
| 41 | Julius Frey | 15 | son | None | Indiana |
| 42 | Raymond Frey | 11 | son | None | Indiana |
| 43 | Josephine Frey | 3 | daughter | None | Indiana |
| 44 | Henrietta Frey | 1 | daughter | None | Indiana |
| 45 | Edgar Landrey | 70 | lodger | Farm Hand | Indiana |
| 46 | Francis Adams | 34 | head | Farmer | Illinois |
| 47 | Cecila Adams | 34 | wife | None | Indiana |
| 48 | Mary Katherine Adams | 13 | daughter | None | Indiana |
| 49 | Gilbert Adams | 11 | son | None | Indiana |
| 50 | Helen Lucile Adams | 10 | daughter | None | Indiana |
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)