HP
Harry Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Porter-County, Indiana
Our Model Tree links this Harry Peterson across the 1920, 1930 and 1940 US Censuses in Porter-County, Indiana (XGBoost, ~Confirmed), with identified parents Alma & Elsie — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Porter-County, Indiana |
| Surname | Peterson |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Center Township |
| 1935 Residence (County) | Porter |
| Additional Details | |
| Occupation | Machine operator |
| Industry | Metal Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 985 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Machine Operator |
| Township / Ward | Center Township |
| Est. Birth Year | ~1917 |
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 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Alma Peterson | Spouse | — | 60 | ~1880 |
| Gus Peterson | Head | — | 58 | ~1882 |
| Harry Peterson | Son | — | 20 | ~1920 |
| Harry Peterson | Son | — | 23 | ~1917 |
Census Appearances
1920
Porter, Indiana
Son, age 3
Porter, Indiana · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Harvey |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Porter, Indiana
Son, age 12
Porter, Indiana · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Harvey |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Porter-County, Indiana
Son, age 23
Porter-County, Indiana · implied b. ~1917 — 4 household members
| Surname | Peterson |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Center Township |
| 1935 Residence (County) | Porter |
| Occupation | Machine operator |
| Industry | Metal Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 985 |
| Highest Grade | Hs 4 |
| 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 Harry Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Alma Peterson (~0.92 confidence) and mother Elsie Peterson (~0.92 confidence) and mother Alma Peterson (~0.92 confidence) and father Gus Peterson (~0.92 confidence) and father Gus Peterson (~0.92 confidence) and father Gust Peterson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Alma Peterson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Elsie Peterson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Alma Peterson
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Gus Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Gus Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Gust Peterson
b. ~1883
Source father
● Household
· direct · ~0.92
This person
Anchor record
Harry Peterson
Son · 1940 · age 23 · b. ~1917 · Indiana
★ You are viewing this record
Sibling
Harry Peterson
Sibling · 1940 · age 20
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 — Porter-County, Indiana
Open full size
1940 US Federal Census — Porter-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01086-00365)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank L Horner | 64 | Head | Farmer | Indiana |
| 2 | John B Horner | 26 | Son | Salesman | Indiana |
| 3 | Carl Peterson | 36 | Head | Farmer | Sweden |
| 4 | Ellen S Peterson | 40 | Wife | — | Sweden |
| 5 | Rich Affeld | 57 | Head | Watchman | Indiana |
| 6 | Florence Affeld | 33 | Wife | — | Indiana |
| 7 | Walter J Affeld | 33 | Head | Machine Operator | Indiana |
| 8 | Lucile Affeld | 32 | Wife | — | Indiana |
| 9 | Shirley Affeld | 8 | Daughter | — | Indiana |
| 10 | Henry Rathman | 66 | Head | Farmer | Indiana |
| 11 | Elizabeth Rathman | 68 | Wife | — | Indiana |
| 12 | Joseph Alagela | 61 | Head | Farmer | Bohemia |
| 13 | Albina Alagela | 52 | Wife | — | Bohemia |
| 14 | Clarence Morris | 31 | Head | Laborer | Indiana |
| 15 | Cela Morris | 57 | Mother | — | Missouri |
| 16 | Shirley Patrick | 3 | Niece | — | Indiana |
| 17 | William J Graham | 60 | Head | Farmer | Indiana |
| 18 | Emma Graham | 58 | Wife | — | Indiana |
| 19 | Cecil Graham | 27 | Son | Charger | Indiana |
| 20 | Kenneth Graham | 18 | Son | Laborer | Indiana |
| 21 | Robert Clark | 33 | Head | Laborer | Nebraska |
| 22 | Robert Clark | 65 | Father | Farmer | Ohio |
| 23 | Clara Clark | 70 | Mother | — | Indiana |
| 24 | Gus Peterson | 58 | Head | Farmer | Sweden |
| 25 | Alma Peterson | 60 | Wife | — | Sweden |
| 26 | Harry Peterson THIS PERSON | 23 | Son | Machine Operator | Indiana |
| 27 | Harry Peterson | 20 | Son | Carpenter | Indiana |
| 28 | Charles J Johnson | 61 | Head | Farmer | Sweden |
| 29 | Christina Johnson | 49 | Wife | — | Sweden |
| 30 | Ethel Johnson | 24 | Daughter | Beauty Operator | Indiana |
| 31 | Howard Johnson | 15 | Son | — | Indiana |
| 32 | John W Savage | 47 | Head | Carpenter | Ohio |
| 33 | Dora Savage | 37 | Wife | — | Illinois |
| 34 | Jack A Savage | 7 | Son | — | Illinois |
| 35 | Melvin J Lumbardy | 37 | Head | Lab Asst | Illinois |
| 36 | Lois Lumbardy | 38 | Wife | — | Illinois |
| 37 | Melvin C Lumbardy | 13 | Son | — | Illinois |
| 38 | Charles Walter | 43 | Head | Farmer | Alabama |
| 39 | Paul Haiman | 58 | Servant | — | South Dakota |
| 40 | David A Haiman | 13 | Lodger | — | South Dakota |
Related Census Records
Pedigree Summary
Harry + 1 sibling
Gen 1 · 6 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)