JH
John Harmon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sanpete-County, Utah
Our Model Tree links this John Harmon across the 1920, 1930 and 1940 US Censuses in Sanpete-County, Utah (XGBoost, ~Confirmed), with identified parents Milton & Rosella — first a son (b.~1917), then head of a 11-person household.
Age 23
b. ~1917
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sanpete-County, Utah |
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Manti City |
| 1935 Residence (County) | Sanpete |
| Additional Details | |
| Occupation | Salesman |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 298 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Salesman |
| Township / Ward | Manti City |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Janet Harmon | Daughter | — | 6 | ~1934 |
| Beth Harmon | Daughter | — | 20 | ~1920 |
| Donna Harmon | Daughter | — | 21 | ~1919 |
| Norma Harmon | Daughter | — | 24 | ~1916 |
| Melva Harmon | Daughter | — | 17 | ~1923 |
| Suzanne Harmon | Daughter | — | 3 | ~1937 |
| Milton Harmon | Head | — | 48 | ~1892 |
| Richard Harmon | Son | — | 19 | ~1921 |
| John Harmon | Son | — | 23 | ~1917 |
| George Harmon | Son | — | 21 | ~1919 |
| Regina Harmon | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Sanpete, Utah
Son, age 3
Sanpete, Utah · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| 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 13
Sanpete, Utah · implied b. ~1917 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Sanpete-County, Utah
Son, age 23
Sanpete-County, Utah · implied b. ~1917 — 11 household members
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Manti City |
| 1935 Residence (County) | Sanpete |
| Occupation | Salesman |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 298 |
| Highest Grade | Hs 4 |
| 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 John Harmon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Milton Harmon (~0.92 confidence) and mother Rosella Harmon (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Milton Harmon
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Rosella Harmon
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Harmon
Son · 1940 · age 23 · b. ~1917 · Utah
★ You are viewing this record
Sibling
Suzanne Harmon
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janet Harmon
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Harmon
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beth Harmon
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melva Harmon
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Harmon
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donna Harmon
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norma Harmon
Sibling · 1940 · age 24
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
38 people indexed on this census page (nara:1940:m-t0627-04217-00399)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emil Mickelson | 52 | Head | Retired Shoemaker | Germany |
| 2 | Mathilda Mickelson | 52 | Wife | — | Germany |
| 3 | Hans J. Madsen | 48 | Head | Farmer | Utah |
| 4 | Vera Madsen | 43 | Wife | — | Utah |
| 5 | Herbert J. Madsen | 25 | Son | — | Utah |
| 6 | Vivian Madsen | 21 | Daughter | — | Utah |
| 7 | William Mcarthur | 51 | Head | Manager | Utah |
| 8 | Leona Mcarthur | 48 | Wife | — | Utah |
| 9 | Charles Frederick Magle | 73 | Head | Retired Railroad | Illinois |
| 10 | Hulda Magle | 69 | Wife | Agent For Church | Illinois |
| 11 | Ruth Magle | 28 | Daughter | — | Utah |
| 12 | Grant U. Magle | 2 | Grandson | — | Utah |
| 13 | Ralph Hammond | 53 | Head | Druggist | Utah |
| 14 | Agnes Hammond | 53 | Wife | — | Norway |
| 15 | Byron Hammond | 23 | Son | — | Utah |
| 16 | Fred Hammond | 17 | Son | — | Utah |
| 17 | Reed Hammond | 12 | Son | — | Utah |
| 18 | Dorothy Hammond | 9 | Daughter | — | Utah |
| 19 | Hugh Hammond | 7 | Son | — | Utah |
| 20 | George Clark | 61 | Head | Doctor | Utah |
| 21 | May Clark | 57 | Wife | — | Utah |
| 22 | Clifford George Clark | 14 | Son | — | Utah |
| 23 | Henry August Dahl | 52 | Head | Abstractor | Utah |
| 24 | Sophia S. Dahl | 52 | Wife | — | Utah |
| 25 | Agnes Dahl Peterson | 71 | Head | Pensioner | Utah |
| 26 | Milton S. Harmon | 48 | Head | Farmer | Utah |
| 27 | Regina Harmon | 48 | Wife | Church Worker | Utah |
| 28 | Norma Harmon | 24 | Daughter | House Mother | Utah |
| 29 | Donna Harmon | 21 | Daughter | — | Utah |
| 30 | Suzanne Harmon | 3 | Daughter | — | Utah |
| 31 | George Harmon | 21 | Son | Delivery Truck | Utah |
| 32 | Richard Harmon | 19 | Son | — | Utah |
| 33 | Melva Harmon | 17 | Daughter | — | Utah |
| 34 | John Harmon THIS PERSON | 23 | Son | Salesman | Utah |
| 35 | Beth Harmon | 20 | Daughter | — | Utah |
| 36 | Janet Harmon | 6 | Daughter | — | Idaho |
| 37 | James Vandermuellen | 51 | Head | — | Utah |
| 38 | Alton Vandermuellen | 21 | Son | N.Y.A. | Utah |
Related Census Records
Pedigree Summary
John + 8 siblings
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)