JH
John Hartman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Elkhart-County, Indiana
Our Model Tree links this John Hartman across the 1930 and 1940 US Censuses in Elkhart-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Elkhart-County, Indiana |
| Surname | Hartman |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Kosciusko |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Union Twp |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eunice Hartman | Daughter | — | 12 | ~1928 |
| Lucinda Hartman | Daughter | — | 7 | ~1933 |
| Miriam Hartman | Daughter | — | 4 | ~1936 |
| Elmer Hartman | Head | — | 38 | ~1902 |
| Ralph Hartman | Son | — | ~1940 | |
| Dennis Hartman | Son | — | 1 | ~1939 |
| Peter Hartman | Son | — | 5 | ~1935 |
| John Hartman | Son | — | 11 | ~1929 |
| Alice Hartman | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Elkhart, Indiana
Son, age 1
Elkhart, Indiana · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Elkhart-County, Indiana
Son, age 11
Elkhart-County, Indiana · implied b. ~1929 — 9 household members
| Surname | Hartman |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Kosciusko |
| Highest Grade | 5 |
| 1935 Residence | Indiana |
| 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 John Hartman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hartman
Son · 1940 · age 11 · b. ~1929 · Indiana
★ You are viewing this record
Sibling
Ralph Hartman
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Hartman
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eunice Hartman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Hartman
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucinda Hartman
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Miriam Hartman
Sibling · 1940 · age 4
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
1940 US Federal Census — Elkhart-County, Indiana
Open full size
1940 US Federal Census — Elkhart-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01041-00886)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elmer Hartman | 38 | Head | Farmer | Indiana |
| 2 | Alice Hartman | 34 | Wife | — | Indiana |
| 3 | Eunice Hartman | 12 | Daughter | — | Indiana |
| 4 | John E. Hartman THIS PERSON | 11 | Son | — | Indiana |
| 5 | Lucinda Hartman | 7 | Daughter | — | Indiana |
| 6 | Peter Hartman | 5 | Son | — | Indiana |
| 7 | Miriam Hartman | 4 | Daughter | — | Indiana |
| 8 | Dennis Hartman | 1 | Son | — | Indiana |
| 9 | Ralph Hartman | 0 | Son | — | Indiana |
| 10 | Minnie Warner | 64 | Head | Farming | Indiana |
| 11 | Daniel Lees | 27 | Hired man | Farmer | Indiana |
| 12 | George R. Sheets | 42 | Head | Farmer | Indiana |
| 13 | Ruth Audena Sheets | 45 | Wife | — | Indiana |
| 14 | Vernon W. Sheets | 3 | Son | — | Indiana |
| 15 | Nannie Sheets | 72 | Mother | — | Indiana |
| 16 | Stanley Pippenger | 28 | Head | Farmer | Indiana |
| 17 | Dorothy Pippenger | 29 | Wife | — | Indiana |
| 18 | Lorena Pippenger | 5 | Daughter | — | Indiana |
| 19 | Christine Pippenger | 5 | Daughter | — | Indiana |
| 20 | Christian Schmucker | 21 | Hired man | Farm Hand | Michigan |
| 21 | C. Leroy Conner | 67 | Head | Attendant | Indiana |
| 22 | Lee Edward Tobias | 50 | Head | Sawyer | Ohio |
| 23 | Katie Ann Tobias | 48 | Wife | — | Ohio |
| 24 | Chalmer Tobias | 23 | Son | Butter Maker And Handyman | Ohio |
| 25 | Ralph D. Tobias | 21 | Son | Stainer & Finisher | Ohio |
| 26 | Charles Tobias | 18 | Son | Farm Hand | Ohio |
| 27 | Laura Irene Tobias | 15 | Daughter | — | Indiana |
| 28 | June Tobias | 12 | Daughter | — | Indiana |
| 29 | Levi Tobias | 10 | Son | — | Indiana |
| 30 | Robert Tobias | 9 | Son | — | Indiana |
| 31 | Jack D. Tobias | 7 | Son | — | Indiana |
| 32 | Ruby Tobias | 6 | Daughter | — | Indiana |
| 33 | John E. Tobias | 3 | Son | — | Indiana |
| 34 | Patty A. Tobias | 2 | Daughter | — | Indiana |
| 35 | John Muntz | 47 | Head | Farmer | Germany |
| 36 | Lorna Muntz | 40 | Wife | — | Indiana |
| 37 | Lois Muntz | 19 | Daughter | — | Indiana |
| 38 | Billy Muntz | 16 | Son | — | Indiana |
| 39 | John Godschalk | 75 | Head | Farmer | Indiana |
| 40 | Mary Godschalk | 67 | Wife | — | Indiana |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)