MP
Mary Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sanpete-County, Utah
Our Model Tree links this Mary Peterson across the 1910, 1920, 1930 and 1940 US Censuses in Sanpete-County, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 4-person household.
Age 52
b. ~1888
Female
Spouse
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sanpete-County, Utah |
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Moroni City |
| 1935 Residence (County) | Sanpete |
| Additional Details | |
| Highest Grade | H 7 |
| 1935 Residence | Utah |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Moroni City |
| Est. Birth Year | ~1888 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Fay Peterson | Daughter | — | 18 | ~1922 |
| Phyllis Peterson | Daughter | — | 16 | ~1924 |
| H Peterson | Head | — | 61 | ~1879 |
| Mary Peterson | Spouse | — | 52 | ~1888 |
Census Appearances
1910
Sanpete, Utah
Spouse, age 22
Sanpete, Utah · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Utah |
| Years Married | 1 |
| Children Born | 0 |
| Children Living | 0 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1920
Sanpete, Utah
Spouse, age 32
Sanpete, Utah · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Utah |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Sanpete, Utah
Other, age 42
Sanpete, Utah · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary E |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 16 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Sanpete-County, Utah
Spouse, age 52
Sanpete-County, Utah · implied b. ~1888 — 4 household members
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Moroni City |
| 1935 Residence (County) | Sanpete |
| Highest Grade | H 7 |
| 1935 Residence | Utah |
| 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 Mary Peterson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Peterson
Spouse · 1940 · age 52 · b. ~1888 · Utah
★ 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 — 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-t0627-04217-00487)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gloria Christensen | 17 | Daughter | — | Utah |
| 42 | Laila Christensen | 14 | Daughter | — | Utah |
| 43 | Lloyd P. Christensen | 23 | Head | Laborer | Utah |
| 44 | Eva Christensen | 18 | Wife | — | Utah |
| 45 | Christina Christensen | 73 | Head | — | Denmark |
| 46 | Hyrum Bjerregaard | 55 | Head | Laborer | Utah |
| 47 | Melvina Bjerregaard | 57 | Wife | — | Utah |
| 48 | Mantel H. Bjerregaard | 25 | Son | Laborer | Utah |
| 49 | Morris P. Draper | 36 | Head | Postmaster | Utah |
| 50 | Minnie A. Draper | 34 | Wife | — | Utah |
| 51 | Maurine Draper | 7 | Daughter | — | Utah |
| 52 | Darla Draper | 4 | Daughter | — | Utah |
| 53 | Agnes B. Pautovich | 62 | Head | — | Utah |
| 54 | Jane E. Simpson | 64 | Head | — | Utah |
| 55 | Alice Simpson | 14 | Grand-daughter | — | Utah |
| 56 | Lee Simpson | 13 | Grand-son | — | Utah |
| 57 | H. J. A. Peterson | 61 | Head | Farmer | Utah |
| 58 | Mary Peterson THIS PERSON | 52 | Wife | — | Utah |
| 59 | Fay Peterson | 18 | Daughter | — | Utah |
| 60 | Phyllis Peterson | 16 | Daughter | — | Utah |
| 61 | Emilie B. Nielsen | 67 | Head | — | Denmark |
| 62 | Mary Draper | 73 | Sister | — | Denmark |
| 63 | Wilford Cahoon | 32 | Head | Farmer | Utah |
| 64 | Luella P. Cahoon | 28 | Wife | — | Utah |
| 65 | Morris Cahoon | 4 | Son | — | Utah |
| 66 | Gary Cahoon | 0 | Son | — | Utah |
| 67 | H. E. Dice | 57 | Head | Medical Doctor | Iowa |
| 68 | Ida M. Dice | 46 | Wife | Nurse | Canada-English |
| 69 | Dorothy C. Dice | 18 | Daughter | — | Utah |
| 70 | Gladys Dice | 14 | Daughter | — | Utah |
| 71 | Bert E. Dice | 15 | Son | — | Utah |
| 72 | E. L. Irons | 54 | Head | Farmer | Utah |
| 73 | Leona P. Irons | 50 | Wife | — | Utah |
| 74 | Kline Irons | 12 | Son | — | Utah |
| 75 | R. H. Livingstone | 18 | Head | Laborer | Utah |
| 76 | Marcella Livingstone | 17 | Wife | — | Utah |
| 77 | Marvin J. Anderson | 49 | Head | Merchant | Utah |
| 78 | Alga Anderson | 45 | Wife | — | Utah |
| 79 | Beth Anderson | 15 | Daughter | — | Utah |
| 80 | Newel B. Curtis | 34 | Head | Painter | Utah |
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)