JH
John Hartman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this John Hartman across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 3-person household.
Age 68
b. ~1872
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Hartman |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 249 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Rockford City |
| Est. Birth Year | ~1872 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Hartman | Head | — | 68 | ~1872 |
| Frank Hartman | Son | — | 39 | ~1901 |
| Anna Hartman | Spouse | — | 65 | ~1875 |
Census Appearances
1920
Winnebago, Illinois
Head, age 49
Winnebago, Illinois · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | Johan |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Foreman |
| Industry | Mirror Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Sweden |
| Year of Naturalization | 1911 |
| Birthplace (normalized) | sweden |
1930
Winnebago, Illinois
Head, age 58
Winnebago, Illinois · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John E. A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 21 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Plate Glass Worker |
| Industry | Mirror Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 6000.00 |
| Radio Set | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Winnebago-County, Illinois
Head, age 68
Winnebago-County, Illinois · implied b. ~1872 — 3 household members
| Surname | Hartman |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Naturalization Status | Naturalized |
| Income (1939) | 249 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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.
Show:
This person
Anchor record
John Hartman
Head · 1940 · age 68 · b. ~1872 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00913-00737)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna M. Pearson | 83 | Mother | — | Sweden |
| 2 | Delmar E. Rydbom | 28 | Head | Assembler | Iowa |
| 3 | Janet Rydbom | 23 | Wife | Assembler | Pennsylvania |
| 4 | Marianne Rydbom | 21 | Daughter | Office | Illinois |
| 5 | Marian Rydbom | 19 | Daughter | Office | Illinois |
| 6 | John E. Hartman THIS PERSON | 68 | Head | — | Sweden |
| 7 | Anna W. Hartman | 65 | Wife | — | Sweden |
| 8 | Frank Hartman | 39 | Son | — | Illinois |
| 9 | Edwin Carlson | 32 | Head | Artist | Canada |
| 10 | Astrid Carlson | 23 | Wife | — | Sweden |
| 11 | Gus Omark | 33 | Head | Mechanic | Sweden |
| 12 | Violet Omark | 35 | Wife | — | Illinois |
| 13 | Carl G. Fredberg | 70 | Head | — | Sweden |
| 14 | Augusta Fredberg | 70 | Wife | — | Sweden |
| 15 | Milton Fredberg | 33 | Son | Clerk | Illinois |
| 17 | Einar Carlson | 37 | Head | Shipping Clerk | Illinois |
| 18 | Inez Carlson | 32 | Wife | — | Illinois |
| 19 | Judith Carlson | 6 | Daughter | — | Illinois |
| 20 | Neil Carlson | 5 | Son | — | Illinois |
| 21 | Barton Carlson | 2 | Son | — | Illinois |
| 22 | Ross Klippert | 23 | Nephew | Laborer | Canada |
| 23 | George Garner | 30 | Head | Business | South Dakota |
| 24 | Ira Lee Garner | 37 | Wife | — | Kentucky |
| 26 | Kenneth Anderson | 40 | Head | Business | Illinois |
| 27 | Mary Anderson | 51 | Wife | — | Germany |
| 28 | Pearl Anderson | 19 | Daughter | Stenographer | Illinois |
| 29 | Carl O. Gorancon | 68 | Head | Laborer | Sweden |
| 30 | Anna Gorancon | 63 | Wife | — | Sweden |
| 31 | Paul Gorancon | 32 | Son | Laborer | Illinois |
| 32 | Arvid Peterson | 53 | Head | Cabinet Maker | Sweden |
| 33 | Ingrid Peterson | 52 | Wife | — | Sweden |
| 34 | Arvid H. Peterson | 28 | Son | Draftsman | Illinois |
| 35 | Eric Peterson | 22 | Son | Apprentice | Illinois |
| 36 | Harry Peterson | 14 | Son | — | Illinois |
| 37 | Hjalmar Nelson | 62 | Head | Heat Treater | Sweden |
| 38 | Christina Nelson | 56 | Wife | — | Sweden |
| 39 | Fred Dahlquist | 61 | Brother | Farm Labor | Sweden |
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)