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Oscar Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Oscar Peterson across the 1910, 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & Matilda — first a son (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Peterson |
| Given Name | Oscar A |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | laborer |
| Industry | building construction |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Laborer |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1909 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| John Peterson | Head | — | 81 | ~1859 |
| Oscar Peterson | Son | — | 31 | ~1909 |
| Gustave Peterson | Son | — | 40 | ~1900 |
| Matilda Peterson | Spouse | — | 71 | ~1869 |
Census Appearances
1910
Ramsey, Minnesota
Son, age 3
Ramsey, Minnesota · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Ramsey, Minnesota
Son, age 12
Ramsey, Minnesota · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 22
Ramsey, Minnesota · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Oscar E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Shoe store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Son, age 31
Ramsey-County, Minnesota · implied b. ~1909 — 4 household members
| Surname | Peterson |
| Given Name | Oscar A |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul City |
| 1935 Residence (County) | Ramsey |
| Occupation | laborer |
| Industry | building construction |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Oscar Peterson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Peterson (~0.92 confidence) and mother Matilda Peterson (~0.92 confidence) and father August Peterson (~0.92 confidence) and mother Ida Peterson (~0.92 confidence) and father August Peterson (~0.92 confidence) and father August Peterson (~0.92 confidence) and mother Ida Peterson (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Peterson
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Matilda Peterson
b. ~1869
Source mother
● Household
· direct · ~0.92
Father
August Peterson
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Ida Peterson
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
August Peterson
b. ~1872
Source father
● Household
· direct · ~0.92
Father
August Peterson
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Ida Peterson
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Peterson
Son · 1940 · age 31 · b. ~1909 · Minnesota
★ You are viewing this record
Sibling
Gustave Peterson
Sibling · 1940 · age 40
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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01994-00255)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | La Verne Munson | 16 | daughter | — | Minnesota |
| 42 | Alfred Clifford | 50 | head | Salesman | Minnesota |
| 43 | Lillian Clifford | 42 | wife | — | Minnesota |
| 44 | Bertram Clifford | 18 | son | — | Minnesota |
| 45 | Marion Peterson | 27 | lodger | Beauty Operator | Minnesota |
| 46 | Thomas H Larkin | 49 | head | Pressman | Oklahoma |
| 47 | Marta Larkin | 44 | wife | — | Norway |
| 48 | Thomas A Larkin | 21 | son | Grocery Clerk | Oklahoma |
| 49 | Janet Larkin | 17 | daughter | — | Minnesota |
| 50 | Geraldine Larkin | 15 | daughter | — | Minnesota |
| 51 | Inez Larkin | 13 | daughter | — | Minnesota |
| 52 | John L Johnson | 52 | head | Repairs Cars | Sweden |
| 53 | Jenny Johnson | 38 | wife | — | Norway |
| 54 | Robert Johnson | 17 | son | — | Minnesota |
| 55 | Leroy Johnson | 15 | son | — | Minnesota |
| 56 | Donna M Johnson | 11 | daughter | — | Minnesota |
| 57 | Marilyn Johnson | 6 | daughter | — | Minnesota |
| 58 | Albert H Johnson | 41 | head | English Teacher | Minnesota |
| 59 | Alice Johnson | 40 | wife | — | Minnesota |
| 60 | Earl Johnson | 16 | son | — | Minnesota |
| 61 | Dorothy Johnson | 14 | daughter | — | Minnesota |
| 62 | David Johnson | 12 | son | — | Minnesota |
| 63 | Virginia Johnson | 3 | daughter | — | Minnesota |
| 64 | Harry Bell | 49 | head | Clerk | Minnesota |
| 65 | Elfrida Bell | 47 | wife | — | Minnesota |
| 66 | Gloria Bell | 16 | daughter | — | Minnesota |
| 67 | Patricia Bell | 14 | daughter | — | Minnesota |
| 68 | Edwin Gustafson | 63 | head | — | Sweden |
| 69 | Nina Gustafson | 62 | wife | — | Sweden |
| 70 | Hazel Gustafson | 34 | daughter | Office Clerk | Minnesota |
| 71 | John Nelson | 74 | head | — | Sweden |
| 72 | Christine Nelson | 64 | wife | — | Norway |
| 73 | Helen Nelson | 21 | daughter | Stenographer | Minnesota |
| 74 | Ann E Johnson | 58 | lodger | Nursemaid | Pennsylvania |
| 75 | John A Peterson | 81 | head | — | Sweden |
| 76 | Matilda Peterson | 71 | wife | — | Sweden |
| 77 | Gustave Peterson | 40 | son | Laborer | Minnesota |
| 78 | Oscar A Peterson THIS PERSON | 31 | son | Laborer | Minnesota |
| 79 | Edward J Barry | 59 | head | Repairman | Minnesota |
| 80 | Grace Barry | 57 | wife | — | Minnesota |
Related Census Records
Pedigree Summary
Oscar + 1 sibling
Gen 1 · 7 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)