RP
Richard Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sanpete-County, Utah
Our Model Tree links this Richard Peterson across the 1920, 1930 and 1940 US Censuses in Sanpete-County, Utah (XGBoost, ~Confirmed), with identified parents J & S — first a son (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sanpete-County, Utah |
| Surname | Peterson |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Ephraim City |
| 1935 Residence (County) | Sanpete |
| Additional Details | |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | NP |
| Income (1939) | 30 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Laborer |
| Township / Ward | Ephraim City |
| Est. Birth Year | ~1911 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| S Peterson | Head | — | 69 | ~1871 |
| Lilly Peterson | Spouse | — | 66 | ~1874 |
| Lucille Peterson | Daughter | — | 32 | ~1908 |
| Richard Peterson | Son | — | 29 | ~1911 |
Census Appearances
1920
Sanpete, Utah
Son, age 9
Sanpete, Utah · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Sanpete, Utah
Son, age 19
Sanpete, Utah · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Sanpete-County, Utah
Son, age 29
Sanpete-County, Utah · implied b. ~1911 — 4 household members
| Surname | Peterson |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Ephraim City |
| 1935 Residence (County) | Sanpete |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | NP |
| Income (1939) | 30 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Richard Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Petersen (~0.92 confidence) and father S Peterson (~0.92 confidence) and father Soren Peterson (~0.92 confidence) and mother Lillian Peterson (~0.92 confidence) and mother Lilly Peterson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Petersen
b. ~1871
Source father
● Household
· direct · ~0.92
Father
S Peterson
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Soren Peterson
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Lillian Peterson
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Lilly Peterson
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Richard Peterson
Son · 1940 · age 29 · b. ~1911 · Utah
★ You are viewing this record
Sibling
Lucille Peterson
Sibling · 1940 · age 32
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 — Sanpete-County, Utah
Open full size
1940 US Federal Census — Sanpete-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04217-00226)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Neldon Hansen | 29 | Head | Truck Driver | Utah |
| 2 | Amelia Beck Hansen | 23 | Wife | — | Utah |
| 3 | Ronald Neldon Hansen | 3 | Son | — | Utah |
| 4 | Keith S. Hansen | 2 | Son | — | Utah |
| 5 | Aaron Burnholt | 57 | Head | Mason | Utah |
| 6 | Jenny E. S. Burnholt | 54 | Wife | — | Utah |
| 7 | Paul S. Wright | 24 | Head | Assistant Manager | Utah |
| 8 | Jessie A. G. Wright | 21 | Wife | — | Utah |
| 9 | Paul D. Wright | 3 | Son | — | Utah |
| 10 | Carol M. Wright | 1 | Daughter | — | Utah |
| 11 | Sadie Strong | 63 | Head | Clerk | Utah |
| 12 | Russell M. Christensen | 31 | Head | Laborer | Utah |
| 13 | Marcella Christensen | 36 | Wife | — | Utah |
| 14 | Moyle G. Christensen | 21 | Son | Manager | Utah |
| 15 | Don Christensen | 15 | Son | Family Work | Utah |
| 16 | Bonnie Christensen | 14 | Daughter | None | Utah |
| 17 | Melvin Christensen | 16 | Son | — | Utah |
| 18 | Clayton Sorensen | 45 | Head | Mechanic | Utah |
| 19 | Clara M. Sorensen | 44 | Wife | — | So. Dakota |
| 20 | Moyle Jensen | 23 | Ward | Laborer | Utah |
| 21 | Walter Sorensen | 53 | Head | Operator | Denmark |
| 22 | Harris Sorensen | 30 | Son | Laborer | Utah |
| 23 | Mary A. Christensen | 78 | Mother-in-law | — | Utah |
| 24 | S. Peter Peterson | 69 | Head | — | Utah |
| 25 | Lilly P. S. Peterson | 66 | Wife | — | Utah |
| 26 | Lucille Peterson | 32 | Daughter | Teacher | Utah |
| 27 | Richard Peterson THIS PERSON | 29 | Son | Laborer | Utah |
| 28 | Arson P. Allred | 61 | Head | Laborer | Utah |
| 29 | Hannah Allred | 67 | Wife | — | Utah |
| 30 | Marvin A. Johnson | 24 | Head | Labourer | Utah |
| 31 | Minnie G. Johnson | 57 | Mother | — | Utah |
| 32 | Kenneth Anderson | 31 | Head | Laborer | Utah |
| 33 | Marguerite Anderson | 27 | Wife | — | Utah |
| 34 | Leah Anderson | 15 | Daughter | — | Utah |
| 35 | Ted Anderson | 17 | Son | Apprentice-Worker | Utah |
| 36 | Vera Jean Anderson | 14 | Daughter | Help | Utah |
| 37 | Barbara Anderson | 12 | Daughter | — | Utah |
| 38 | Monte R. Anderson | 10 | Son | — | Utah |
| 39 | Norma J. Anderson | 9 | Daughter | — | Utah |
| 40 | Rodney L. Anderson | 6 | Son | — | Utah |
Pedigree Summary
Richard + 1 sibling
Gen 1 · 5 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)