EP
Elmer Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Joseph-County, Indiana
Our Model Tree links this Elmer Peterson across the 1920, 1930 and 1940 US Censuses in St.-Joseph-County, Indiana (XGBoost, ~Confirmed), with identified parents Agnet & Hjalmar — first a son (b.~1894), then head of a 2-person household.
Age 46
b. ~1894
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Joseph-County, Indiana |
| Surname | Peterson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | South Bend |
| 1935 Residence (County) | St Joseph |
| Additional Details | |
| Occupation | Laborer |
| Industry | Sewer Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 724 |
| Highest Grade | Hs 12 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | South Bend |
| Est. Birth Year | ~1894 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Elmer | Age | Birth yr |
|---|---|---|---|---|
| Elmer Peterson | Son | — | 46 | ~1894 |
| Agnet Ohlund | Head | — | 72 | ~1868 |
Census Appearances
1920
St Joseph, …
Son, age 25
St Joseph, Indiana · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Elmer |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | worker |
| Industry | Water Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
St Joseph, …
Other, age 36
St Joseph, Indiana · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Elmer |
| Relationship to Head | Step Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Retail Grocery |
| Class of Worker | E |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
St.-Joseph-County, Indiana
Son, age 46
St.-Joseph-County, Indiana · implied b. ~1894 — 2 household members
| Surname | Peterson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | South Bend |
| 1935 Residence (County) | St Joseph |
| Occupation | Laborer |
| Industry | Sewer Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 724 |
| Highest Grade | Hs 12 |
| 1935 Residence | Same Place |
| 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 Elmer Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Agnet Ohlund (~0.92 confidence) and mother Hjalmar Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Agnet Ohlund
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Hjalmar Peterson
b. ~1859
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Peterson
Son · 1940 · age 46 · b. ~1894 · Indiana
★ 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 — St.-Joseph-County, Indiana
Open full size
1940 US Federal Census — St.-Joseph-County, Indiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01135-01089)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alexander Putz | 49 | Head | Fitter | Indiana |
| 42 | Dora Putz | 45 | Wife | — | Indiana |
| 43 | Angeline Putz | 17 | Daughter | Housework | Indiana |
| 44 | Victor Putz | 8 | Son | — | Indiana |
| 46 | Agnet A Ohlund | 72 | Head | — | Sweden |
| 47 | Elmer Peterson THIS PERSON | 46 | Son | Laborer | Indiana |
| 48 | Mary Viski | 55 | Head | — | Hungary |
| 49 | Louis Viski | 28 | Son | Inspector | Hungary |
| 50 | Phillip Colbert | 34 | Head | Truck Driver | Indiana |
| 51 | Marie Colbert | 40 | Wife | — | Indiana |
| 52 | Phillip Jr Colbert | 9 | Son | — | Indiana |
| 53 | Charles Boger | 51 | Head | Machinist | Indiana |
| 54 | Helen Boger | 37 | Wife | Shoemaker | Indiana |
| 55 | Morris Arthur Van Hecht | 46 | Head | Assembler | Belgium |
| 56 | Mary Van Hecht | 48 | Wife | Ironer | Belgium |
| 57 | Andrew Robb | 52 | Head | Body Rubber | Yugoslavia |
| 58 | Julia Robb | 44 | Wife | — | Yugoslavia |
| 59 | Louis Robb | 21 | Son | Car Driver | Indiana |
| 60 | Andrew Robb | 19 | Son | — | Indiana |
| 61 | John Robb | 17 | Son | — | Indiana |
| 62 | Frank Verhatra | 65 | Head | Car Repairer | Belgium |
| 63 | Rose Verhatra | 55 | Wife | — | Indiana |
| 64 | August Verhatra | 32 | Son | Bookkeeper | Indiana |
| 65 | Arthur Verhatra | 24 | Son | Drugstore Clerk | Indiana |
| 66 | Richard Verhatra | 18 | Son | Drugstore Clerk | Indiana |
| 67 | Margaret Verhatra | 22 | Daughter | Counter Clerk | Indiana |
| 68 | Robert Verhatra | 13 | Son | — | Indiana |
| 69 | Regina Nafraidi | 56 | Head | Cleaner | Hungary |
| 70 | Frank Nafraidi | 35 | Son | Pin Cutter | Indiana |
| 71 | Mary Wrentz | 34 | Daughter | — | Wisconsin |
| 72 | Paul Nafraidi | 32 | Son | Rod Winder | Indiana |
| 73 | Vera Nafraidi | 30 | Daughter | Waitress | Indiana |
| 74 | Robert Wrentz | 7 | Grandson | — | Indiana |
| 75 | Jane Beverly Wrentz | 3 | Granddaughter | — | Indiana |
| 76 | Harry Meitert | 31 | Head | Inspector | Indiana |
| 77 | Nina Meitert | 31 | Wife | — | Indiana |
| 78 | Irene Meitert | 9 | Daughter | — | Indiana |
| 79 | Donna Mary Meitert | 5 | Daughter | — | Indiana |
| 80 | Harold L Meitert | 1 | Son | — | Indiana |
Pedigree Summary
Elmer
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)