MD
Mary Davidson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Greene, Indiana
Our Model Tree links this Mary Davidson across the 1920 and 1930 US Censuses in Greene, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 8-person household.
Age 20
b. ~1910
Female
Daughter
Born: Indiana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Greene, Indiana |
| Surname | Davidson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Teacher |
| Township / Ward | Stockton Twp Part Of |
| 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Isabell Davidson | Daughter | — | 7 | ~1923 |
| Dorothy Davidson | Daughter | — | 10 | ~1920 |
| Mary Davidson | Daughter | — | 20 | ~1910 |
| David Davidson | Head | — | 52 | ~1878 |
| Douglas Davidson | Son | — | 12 | ~1918 |
| Robert Davidson | Son | — | 18 | ~1912 |
| William Davidson | Son | — | 16 | ~1914 |
| Isabell Davidson | Spouse | — | 46 | ~1884 |
Census Appearances
1920
Greene, Indiana
Daughter, age 10
Greene, Indiana · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Greene, Indiana
Daughter, age 20
Greene, Indiana · implied b. ~1910 — 8 household members
| Surname | Davidson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | W |
| 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 Davidson across 2 US Census years (1920 and 1930) in Greene, Indiana, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Davidson
Daughter · 1930 · age 20 · b. ~1910 · Indiana
★ You are viewing this record
Sibling
Robert Davidson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Davidson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Davidson
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabell Davidson
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Douglas Davidson
Sibling · 1930 · age 12
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 — Greene, Indiana
Open full size
1930 US Federal Census — Greene, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel590:0463)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adam Vonderschmidt | 62 | Head | Miner | Indiana |
| 2 | Rosa Vonderschmidt | 47 | Wife | — | Indiana |
| 3 | Dwayne Vonderschmidt | 19 | Son | — | Indiana |
| 4 | Milton Shepard | 30 | Head | — | Indiana |
| 5 | Deloma Shepard | 10 | Daughter | — | Indiana |
| 6 | Loden Shepard | 9 | Daughter | — | Indiana |
| 7 | Lula Shepard | 6 | Son | — | Indiana |
| 8 | Louis Doulliment | 45 | Head | Miner | Indiana |
| 9 | Viola Doulliment | 40 | Wife | — | Indiana |
| 10 | Gerald Doulliment | 16 | Son | — | Indiana |
| 11 | Gene Doulliment | 11 | Son | — | Indiana |
| 12 | Anna Doulliment | 11 | Daughter | — | Indiana |
| 13 | Fred Gabbard | 31 | Head | Miner | Indiana |
| 14 | Opal Gabbard | 29 | Wife | — | Indiana |
| 15 | William Gabbard | 10 | Son | — | Indiana |
| 16 | Ruth Gabbard | 8 | Daughter | — | Indiana |
| 17 | Marion Howell | 77 | Head | — | Indiana |
| 18 | Cary J Howell | 43 | Wife | — | Indiana |
| 19 | George Gullion | 72 | Head | Farmer | Indiana |
| 20 | Mary M Gullion | 68 | Wife | — | Indiana |
| 21 | Roy V Blaney | 51 | Head | Farmer | Indiana |
| 22 | Minnie Blaney | 47 | Wife | — | Indiana |
| 23 | Mary Blaney | 16 | Daughter | — | Indiana |
| 24 | Mildred Blaney | 14 | Daughter | — | Indiana |
| 25 | Gene Clayton | 42 | Head | Miner | Indiana |
| 26 | Irene Clayton | 19 | Daughter | — | Indiana |
| 27 | George Clayton | 10 | Son | — | Indiana |
| 28 | Mary A Clayton | 8 | Daughter | — | Indiana |
| 29 | Virginia M Clayton | 4 | Daughter | — | Indiana |
| 30 | William Todd | 44 | Head | Miner | Ohio |
| 31 | Bella Todd | 42 | Wife | — | Kentucky |
| 32 | Douglas E Todd | 10 | Son | — | Indiana |
| 33 | Robert G Todd | 5 | Son | — | Indiana |
| 34 | Mary E Todd | 3 | Daughter | — | Indiana |
| 35 | Lucile E Todd | 1 | Daughter | — | Indiana |
| 36 | Nelson D Hunter | 63 | Father-in-law | — | Kentucky |
| 37 | David Davidson | 52 | Head | Miner | Scotland |
| 38 | Isabell Davidson | 46 | Wife | — | Scotland |
| 39 | Mary Davidson THIS PERSON | 20 | Daughter | Teacher | Indiana |
| 40 | Robert Davidson | 18 | Son | Laborer | Indiana |
| 41 | William Davidson | 16 | Son | Truck Driver | Indiana |
| 42 | Douglas Davidson | 12 | Son | — | Indiana |
| 43 | Dorothy Davidson | 10 | Daughter | — | Indiana |
| 44 | Isabell Davidson | 7 | Daughter | — | Indiana |
| 45 | Philip Moran | 50 | Head | Miner | Scotland |
| 46 | Minnie Moran | 55 | Wife | — | Scotland |
| 47 | James Moran | 22 | Son | Laborer | Scotland |
| 48 | Joyce Moran | 21 | Daughter | Laborer | Scotland |
| 49 | John Moran | 19 | Son | Miner | Indiana |
| 50 | Marion Moran | 17 | Daughter | — | 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)