JH
John Hartman — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Indiana
Our Model Tree links this John Hartman across the 1920, 1930 and 1940 US Censuses in Marion, Indiana (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 4-person household.
Age 53
b. ~1877
Male
Head
Born: Germany
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Indiana |
| Surname | Hartman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Baker |
| Industry | Bakery |
| Class of Worker | E |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 5700 |
| Radio Set | R |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Occupation | Baker |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1877 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Hartman | Head | — | 53 | ~1877 |
| Elmer Hartman | Son | — | 12 | ~1918 |
| Carl Hartman | Son | — | 17 | ~1913 |
| Kate Hartman | Spouse | — | 52 | ~1878 |
Census Appearances
1920
Marion, Indiana
Head, age 43
Marion, Indiana · implied b. ~1877 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartmann |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Germany |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Baker |
| Industry | Bakery |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1930
Marion, Indiana
Head, age 53
Marion, Indiana · implied b. ~1877 — 4 household members
| Surname | Hartman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Baker |
| Industry | Bakery |
| Class of Worker | E |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 5700 |
| Radio Set | R |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Marion-County, Indiana
Head, age 63
Marion-County, Indiana · implied b. ~1877 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartmann |
| Given Name | John Wm |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Naturalization Status | Naturalized |
| Occupation | Baker |
| Industry | Bakery |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 300 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Hartman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Hartman
Head · 1930 · age 53 · b. ~1877 · 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:indianacensus00reel615:0075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Melville O Fulford | 35 | Head | Motorman | Indiana |
| 2 | Catherine Fulford | 25 | Wife | — | Illinois |
| 3 | Frances Fulford | 2 | Daughter | — | Indiana |
| 4 | Rebecca F Smith | 20 | Lodger | Laborer | Kentucky |
| 5 | Ollie Long | 34 | Lodger | Electrician | Indiana |
| 6 | Conier Deils | 21 | Lodger | Cashier | Indiana |
| 7 | Paul Bass | 36 | Head | Laborer | Minnesota |
| 8 | Agnes Bass | 28 | Wife | — | Indiana |
| 9 | Martha Bass | 8 | Daughter | — | Indiana |
| 10 | Kathleen Bass | 4 | Daughter | — | Indiana |
| 11 | Mary Bass | 2 | Daughter | — | Indiana |
| 12 | William Eads | 44 | Head | Barber | Indiana |
| 13 | Nellie Eads | 43 | Wife | — | Indiana |
| 14 | Albert Patterson | 64 | Head | — | Indiana |
| 15 | Angie Patterson | 56 | Wife | — | Indiana |
| 16 | Gordon Patterson | 19 | Son | Machinist | Indiana |
| 17 | John W Wiegand | 63 | Head | Pattern Maker | Indiana |
| 18 | Elizabeth Wiegand | 63 | Wife | — | Germany |
| 19 | Constance Wiegand | 34 | Daughter | Dictaphone Oper | Indiana |
| 20 | Carl H Wiegand | 29 | Son | Clerk | Indiana |
| 21 | Celicia Wiegand | 21 | Daughter | Stenographer | Indiana |
| 22 | Leslie Cooper | 28 | Head | Teamster | Kentucky |
| 23 | Grace Cooper | 25 | Wife | — | Kentucky |
| 24 | Dempsey Cooper | 7 | Daughter | — | Kentucky |
| 25 | Lusion Cooper | 2 | Son | — | Indiana |
| 26 | Cecil Cooper | 0 | Son | — | Indiana |
| 27 | Arthur Searcy | 48 | Head | Manager | Kentucky |
| 28 | Edna Searcy | 41 | Wife | Clerk | Kentucky |
| 29 | Melvin Searcy | 24 | Son | Time Keeper | Indiana |
| 30 | Delta Searcy | 21 | Daughter | Operator | Indiana |
| 31 | Ida Searcy | 18 | Daughter | Stenographer | Indiana |
| 32 | John Schaefer | 54 | Head | Foreman | Indiana |
| 33 | Ida Schaefer | 56 | Wife | — | Indiana |
| 34 | John Jr Schaefer | 13 | Son | — | Indiana |
| 35 | John Hartman THIS PERSON | 53 | Head | Baker | Germany |
| 36 | Kate Hartman | 52 | Wife | — | Indiana |
| 37 | Carl Hartman | 17 | Son | Baker | Indiana |
| 38 | Elmer Hartman | 12 | Son | — | Indiana |
| 39 | Dan L Mikels | 54 | Head | Laborer | Indiana |
| 40 | Cora Mikels | 50 | Wife | — | Indiana |
| 41 | Wendell Mikels | 26 | Son | Assembler | Indiana |
| 42 | Thelma Mikels | 21 | Daughter | Clerical | Indiana |
| 43 | Robert D Mikels | 15 | Son | — | Indiana |
| 44 | Margaret L Mikels | 4 | Daughter | — | Indiana |
| 45 | August Jensen | 58 | Head | Attendant | Germany |
| 46 | Lizzie Jensen | 58 | Wife | — | Germany |
| 47 | Dorothy Jensen | 23 | Daughter | — | Germany |
| 48 | Fred H Kraeckel | 57 | Head | Tin Plate | New York |
| 49 | Cora M Kraeckel | 50 | Wife | — | Indiana |
| 50 | Frank Hazeldeane | 50 | Head | Ice Puller | Ohio |
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)