FP
Fred Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Fred Peterson across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Nels & Anna — first a head (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Peterson |
| Given Name | Fred S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | City & County of Denver |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Auditor |
| Industry | Oil Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Auditor |
| Township / Ward | City County Of Denver |
| Est. Birth Year | ~1900 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Fred | Age | Birth yr |
|---|---|---|---|---|
| Winnifred Peterson | Daughter | — | 9 | ~1931 |
| Laura Peterson | Spouse | — | 38 | ~1902 |
| Fred Peterson | Head | — | 40 | ~1900 |
Census Appearances
1920
Denver, Colorado
Son, age 20
Denver, Colorado · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Fred George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Denmark |
| Occupation | Clerk |
| Industry | Oil Company |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Head, age 29
Denver, Colorado · implied b. ~1901 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Fred G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 26 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Denmark |
| Occupation | Bookkeeper |
| Industry | Structural Steel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Head, age 40
Denver-County, Colorado · implied b. ~1900 — 3 household members
| Surname | Peterson |
| Given Name | Fred S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | City & County of Denver |
| 1935 Residence (County) | Denver |
| Occupation | Auditor |
| Industry | Oil Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Fred Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nels Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nels Peterson
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Fred Peterson
Head · 1940 · age 40 · b. ~1900 · Colorado
★ 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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00486-00784)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Thomas | 25 | Son | — | Colorado |
| 42 | Anna | 57 | Law | — | Ohio |
| 43 | Robert J Darrow | 27 | Head | Manager | Colorado |
| 44 | Alice C Darrow | 24 | Wife | — | Colorado |
| 45 | Robert Michael Darrow | 2 | Son | — | Colorado |
| 46 | Harlan P Bennett | 37 | Head | Salesman | Illinois |
| 47 | Irene M Bennett | 39 | Wife | — | Illinois |
| 48 | Charles Kates | 74 | Head | Merchant | Illinois |
| 49 | Mattie Kates | 65 | Wife | — | Indiana |
| 50 | Walter Ingham | 37 | Head | Chauffeur And Gardener | Ohio |
| 51 | Ruth Ingham | 31 | Wife | Linen Room Att | Colorado |
| 52 | Virginia Ingham | 13 | Daughter | — | Colorado |
| 53 | Walter | 9 | Son | — | California |
| 54 | Lester L Turner | 43 | Head | Mechanic | Missouri |
| 55 | Evelyn Turner | 40 | Wife | — | Colorado |
| 56 | Oriel D Turner | 8 | Son | Auditor | Colorado |
| 57 | Edwin C Chapin | 42 | Head | Auditor | Colorado |
| 58 | Ida M Chapin | 38 | Wife | — | Colorado |
| 59 | Barbara Ann Chapin | 7 | Daughter | — | Colorado |
| 60 | Hazel M Peterson | 53 | Head | Cosmetologist | Ohio |
| 61 | Fred S Peterson THIS PERSON | 40 | Head | Auditor | Colorado |
| 62 | Laura M Peterson | 38 | Wife | — | Colorado |
| 63 | Winnifred C Peterson | 9 | Daughter | — | Colorado |
| 64 | Elmer F Perry | 40 | Head | Mechanical Engineer | Missouri |
| 65 | Opal M Perry | 25 | Wife | Biller | Missouri |
| 66 | Leroy J Jacobson | 35 | Head | Clerk | Utah |
| 67 | Sylvia Jacobson | 33 | Wife | — | Utah |
| 68 | Kenneth Jacobson | 11 | Son | — | Utah |
| 69 | Gordon Jacobson | 9 | Son | — | Utah |
| 70 | Eleanor Siler | 20 | Sister in Law | Maid | Utah |
| 71 | Carl O John | 50 | Head | Structural Engineer | Norway |
| 72 | Alyce L John | 39 | Wife | — | Minnesota |
| 73 | Janet E John | 10 | Daughter | — | Colorado |
| 74 | Clarice Ann John | 9 | Daughter | — | Colorado |
| 75 | Carl Edward John | 6 | Son | — | Colorado |
| 76 | Walter Allan John | 4 | Son | — | Colorado |
| 77 | William Riesner | 70 | Head | — | Illinois |
| 78 | Gretta B Riesner | 64 | Wife | — | Germany |
| 79 | Edelyn Riesner | 30 | Daughter | Maid | Iowa |
| 80 | V Howard Hartley | 39 | Law | Mechanic | Texas |
Pedigree Summary
Fred
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)