ID
Isaac Davis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Indiana
Our Model Tree links this Isaac Davis across the 1900, 1910, 1920 and 1930 US Censuses in Marion, Indiana (XGBoost, ~Confirmed) — first a head (b.~1854), then head of a 3-person household.
Age 76
b. ~1854
Male
Head
Born: Ohio
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Indiana |
| Surname | Davis |
| Given Name | Isaac D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 15000 |
| Radio Set | R |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1854 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Raymond Davis | Son | — | 34 | ~1896 |
| Isaac Davis | Head | — | 76 | ~1854 |
| Ida Davis | Other | — | 70 | ~1860 |
Census Appearances
1900
Marion, Indiana
Head, age 47
Marion, Indiana · implied b. ~1853 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac D. T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ohio |
| Birth Month | April |
| Birth Year | 1853 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1910
Marion, Indiana
Head, age 56
Marion, Indiana · implied b. ~1854 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac V |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Ohio |
| Years Married | 32 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ohio |
| Occupation | Steel-blinder |
| Industry | Steam R. Road |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Marion, Indiana
Head, age 66
Marion, Indiana · implied b. ~1854 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ohio |
| Occupation | switchman |
| Industry | railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Marion, Indiana
Head, age 76
Marion, Indiana · implied b. ~1854 — 3 household members
| Surname | Davis |
| Given Name | Isaac D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 15000 |
| Radio Set | R |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Isaac Davis across 4 US Census years (1900, 1910, 1920 and 1930) in Marion, Indiana, using XGBoost record linkage.
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This person
Anchor record
Isaac Davis
Head · 1930 · age 76 · b. ~1854 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Marion, Indiana
Open full size
1930 US Federal Census — Marion, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel612rs:0331)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James D. Craig | 23 | Son | Bookkeeper | Indiana |
| 2 | Ralph S. Craig | 21 | Son | Artist | Indiana |
| 3 | Elwin E. Craig | 18 | Son | Electrician | Indiana |
| 4 | Clarence E. Pulliam | 39 | Head | Fireman | Indiana |
| 5 | Jarret L. Pulliam | 38 | Wife-H | None | Indiana |
| 6 | Dimmerous Pulliam | 19 | Daughter | Telegraph Operator | Indiana |
| 7 | Fred V. Perkins | 58 | Head | Capsule Sorter | Indiana |
| 8 | Sophia Perkins | 45 | Wife-H | None | Indiana |
| 9 | Earl E. Case | 45 | Head | Street Commissioner | Indiana |
| 10 | Augusta Case | 42 | Wife-H | Presser | Illinois |
| 11 | Francis Lemonville | 33 | Head | Meat Cutter | Indiana |
| 12 | Ellen B. Lemonville | 27 | Wife-H | None | Indiana |
| 13 | James L. Lemonville | 1 | Son | None | Indiana |
| 14 | Rosent Betty Lemonville | 17 | Sister-in-law | Salesman | Indiana |
| 15 | George W. Tart | 22 | Head | Collector | Indiana |
| 16 | Roxanna Tart | 18 | Wife-H | None | Indiana |
| 17 | William H. Richter | 56 | Head | Locomotive Engineer | Indiana |
| 18 | Ida M. Richter | 54 | Wife-H | None | Indiana |
| 19 | Isaac D. Davis THIS PERSON | 76 | Head | None | Ohio |
| 20 | Ida F. Davis | 70 | Wife-H | None | Indiana |
| 21 | Raymond B. Davis | 34 | Son | Advertising Writer | Indiana |
| 22 | William J. Lawrence | 51 | Head | Stenographer | Indiana |
| 23 | Ralph W. Lawrence | 24 | Son | Bookkeeper | Tennessee |
| 24 | Helen D. Lawrence | 25 | Daughter | Stenographer | Tennessee |
| 25 | Jeff Nicholson | 47 | Head | Refrigerating Engineer | Indiana |
| 26 | Pearl Nicholson | 47 | Wife-H | None | Indiana |
| 27 | Carney L. Nicholson | 22 | Son | Refrigerating Engineer | Indiana |
| 28 | John E. Langer | 32 | Head | Brakeman | Indiana |
| 29 | Gay Langer | 34 | Wife-H | None | Indiana |
| 30 | Eugenia Jackson | 14 | Step-daughter | None | Indiana |
| 31 | Verlin Clark | 24 | Lodger | Teacher | Indiana |
| 32 | Joyce Clark | 24 | Lodger | Stenographer | Idaho |
| 33 | Gladys Buck | 25 | — | Waitress | Indiana |
| 34 | June Buck | 7 | Niece | None | Indiana |
| 35 | Henry Segal | 36 | Head | Proprietor | Lithuania |
| 36 | Bessie Segal | 28 | Wife-H | None | Lithuania |
| 37 | Morris Segal | 6 | Son | None | Indiana |
| 38 | Bernard Segal | 4 | Son | None | Indiana |
| 39 | Charles W. Martin | 48 | Head | Proprietor | Indiana |
| 40 | Katherine Martin | 52 | Wife-H | Salesman | Indiana |
| 41 | William C. Dreier | 52 | Head | Brick Mason | Indiana |
| 42 | Gertrude Dreier | 51 | Wife-H | None | Indiana |
| 43 | Robert E. Dreier | 20 | Son | Window Trimmer | Indiana |
| 44 | Audrey L. Dreier | 19 | Daughter-in-law | None | Indiana |
| 45 | Richard E. Dreier | 18 | Son | None | Indiana |
| 46 | Richard D. Dreier | 1 | Grandson | None | Indiana |
| 47 | Maria Cox | 87 | Head-H | None | Ohio |
| 48 | Mattie Perret | 57 | Daughter | None | Ohio |
| 49 | Charles R. Creech | 35 | Head | Machinist | Indiana |
| 50 | Rebecca Creech | 30 | Wife-H | 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)