JF
John Frederick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Minnesota
Our Model Tree links this John Frederick across the 1920, 1930 and 1940 US Censuses in Douglas-County, Minnesota (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 4-person household.
Age 68
b. ~1872
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Minnesota |
| Surname | Frederick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Alexandria City |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 11 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Alexandria City |
| Est. Birth Year | ~1872 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Jeanette Frederick | Daughter | — | 20 | ~1920 |
| John Frederick | Head | — | 68 | ~1872 |
| Martha Frederick | Spouse | — | 55 | ~1885 |
| Betty Frederick | Daughter | — | 17 | ~1923 |
Census Appearances
1920
Douglas, Minnesota
Head, age 47
Douglas, Minnesota · implied b. ~1873 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Janitor |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Ohio |
| Birth Country | United States |
| Year of Naturalization | 96 |
| Birthplace (normalized) | ohio |
1930
Douglas, Minnesota
Head, age 58
Douglas, Minnesota · implied b. ~1872 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 31 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Douglas-County, Minnesota
Head, age 68
Douglas-County, Minnesota · implied b. ~1872 — 4 household members
| Surname | Frederick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Alexandria City |
| 1935 Residence (County) | Douglas |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 11 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Frederick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Frederick
Head · 1940 · age 68 · b. ~1872 · Minnesota
★ 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 — Douglas-County, Minnesota
Open full size
1940 US Federal Census — Douglas-County, Minnesota
Page Contents
28 people indexed on this census page (nara:1940:m-t0627-01919-00452)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Frederick THIS PERSON | 68 | Head | — | Ohio |
| 2 | Martha M. Frederick | 55 | Wife | — | Minnesota |
| 3 | Jeanette Frederick | 20 | Daughter | Saleswoman | Minnesota |
| 4 | Betty L. Frederick | 17 | Daughter | — | Minnesota |
| 5 | John Mohawk | 55 | Head | Woodcutting | Wisconsin |
| 6 | Flora Mohawk | 47 | Wife | — | Wisconsin |
| 7 | Arnold Mohawk | 8 | Grandson | — | Minnesota |
| 8 | Marion F. Mohawk | 29 | Son | Cutting Wood | Minnesota |
| 9 | Agnes Mohawk | 29 | Daughter in law | — | Minnesota |
| 10 | Joshua Jr. Mohawk | 21 | Son | Cutting Wood | Minnesota |
| 11 | Lila Mohawk | 18 | Daughter in law | — | Minnesota |
| 12 | Robert A. Mohawk | 1 | Grandson | — | Minnesota |
| 13 | Rodney D. Mohawk | 12 | Grandson | — | Minnesota |
| 14 | Mary Young | 73 | Head | — | Canada |
| 15 | Leona Bushlack | 56 | Daughter | — | North Dakota |
| 16 | Conrad Englund | 42 | Head | Truck Driver | Minnesota |
| 17 | Florence V. Englund | 37 | Wife | — | Minnesota |
| 18 | Raymond C. Englund | 15 | Son | — | Minnesota |
| 19 | Helen L. Englund | 13 | Daughter | — | Minnesota |
| 20 | Marlys M. Englund | 11 | Daughter | — | Minnesota |
| 21 | Donald L. Englund | 9 | Son | — | Minnesota |
| 22 | Muriel A. Englund | 2 | Daughter | — | Minnesota |
| 23 | Carl J. Anderson | 64 | Head | Salesman | Minnesota |
| 24 | Ragnhild Anderson | 63 | Wife | — | Minnesota |
| 25 | Julian Wicken | 28 | Head | Common Labor | Minnesota |
| 26 | Tilda Anderson | 57 | Head | — | Minnesota |
| 27 | Walter E. Lee | 41 | Head | Wood Cutting | Minnesota |
| 28 | Marie J. Lee | 39 | Wife | — | Tennessee |
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)