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John Martin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Hamilton, Ohio
Our Model Tree links this John Martin across the 1900, 1910, 1920 and 1930 US Censuses in Hamilton, Ohio (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 9-person household.
Age 62
b. ~1868
Male
Head
Born: Kentucky
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Hamilton, Ohio |
| Surname | Martin |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 26 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Additional Details | |
| Occupation | Engineer |
| Industry | Fire Engine Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Engineer |
| Township / Ward | Cincinnati City |
| Est. Birth Year | ~1868 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Julia Martin | Daughter | — | 26 | ~1904 |
| John Martin | Head | — | 62 | ~1868 |
| Edward Donahue | Other | — | 21 | ~1909 |
| Bernard Rupp | Other | — | 74 | ~1856 |
| Gilbert Donahue | Other | — | 33 | ~1897 |
| Lee Hill | Other | — | 24 | ~1906 |
| Raymond Martin | Son | — | 24 | ~1906 |
| Walter Martin | Son | — | 32 | ~1898 |
| Maud Martin | Spouse | — | 61 | ~1869 |
Census Appearances
1900
Hamilton, Ohio
Head, age 35
Hamilton, Ohio · implied b. ~1865 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Birth Month | Sep |
| Birth Year | 1865 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Engineer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1910
Hamilton, Ohio
Head, age 42
Hamilton, Ohio · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | engineer |
| Industry | buggy mfg |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1920
Hamilton, Ohio
Head, age 53
Hamilton, Ohio · implied b. ~1867 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | United States |
| Mother's Birthplace | United States |
| Occupation | Engineer |
| Industry | Stationary |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Hamilton, Ohio
Head, age 62
Hamilton, Ohio · implied b. ~1868 — 9 household members
| Surname | Martin |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 26 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Engineer |
| Industry | Fire Engine Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 John Martin across 4 US Census years (1900, 1910, 1920 and 1930) in Hamilton, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
John Martin
Head · 1930 · age 62 · b. ~1868 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Hamilton, Ohio
Open full size
1930 US Federal Census — Hamilton, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1815:0115)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George Hauck | 56 | Head | Printer | Missouri |
| 52 | Dora Hauck | 46 | Wife | — | Ohio |
| 53 | Irene Hauck | 27 | Daughter | Operator | Ohio |
| 54 | George Hauck | 17 | Son | Painter | Missouri |
| 55 | John M Martin THIS PERSON | 62 | Head | Engineer | Kentucky |
| 56 | Maud Martin | 61 | Wife | — | Ireland |
| 57 | Walter Martin | 32 | Son | Machinist | Kentucky |
| 58 | Julia Martin | 26 | Daughter | — | Kentucky |
| 59 | Raymond Martin | 24 | Son | — | Kentucky |
| 60 | Gilbert Donahue | 33 | Roomer | Clerk | Ohio |
| 61 | Edward Donahue | 21 | Roomer | Spool Maker | Ohio |
| 62 | Lee Hill | 24 | Roomer | Yard Man | Tennessee |
| 63 | Bernard Rupp | 74 | Roomer | Baggage Master | Ohio |
| 64 | Fred Lachenmeyer | 54 | Head | Laborer | Ohio |
| 65 | Anna Lachenmeyer | 53 | Wife | — | Ohio |
| 66 | Cordelia Mure | 69 | Roomer | Folder | Tennessee |
| 67 | Laura Stumler | 55 | Head | House Work | Ohio |
| 68 | Clifford Stumler | 37 | Son | Chauffeur | Ohio |
| 69 | Clifford Stumler | 12 | Grandson | — | Ohio |
| 70 | — | None | — | — | — |
| 71 | — | None | — | — | — |
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| 99 | — | None | — | — | — |
| 100 | — | 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)