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John Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Olmsted-County, Minnesota
Our Model Tree links this John Cooper across the 1920, 1930 and 1940 US Censuses in Olmsted-County, Minnesota (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 4-person household.
Age 72
b. ~1868
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Olmsted-County, Minnesota |
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Rochester |
| 1935 Residence (County) | Olmsted |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Butcher |
| Industry | Grocery |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 900 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Butcher |
| Township / Ward | Rochester |
| Est. Birth Year | ~1868 |
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 |
|---|---|---|---|---|
| Marian Fehrenkamp | Daughter | — | 38 | ~1902 |
| John Cooper | Head | — | 72 | ~1868 |
| Roy Fehrenkamp | Other | — | 8 | ~1932 |
| Clara Cooper | Spouse | — | 70 | ~1870 |
Census Appearances
1920
Olmsted, Minnesota
Head, age 52
Olmsted, Minnesota · implied b. ~1868 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1902 |
| Naturalization Status | First papers filed |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Butcher |
| Industry | Butcher shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | R |
| Birthplace (normalized) | england |
1930
Olmsted, Minnesota
Head, age 62
Olmsted, Minnesota · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 25 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Butcher |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Olmsted-County, Minnesota
Head, age 72
Olmsted-County, Minnesota · implied b. ~1868 — 4 household members
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Rochester |
| 1935 Residence (County) | Olmsted |
| Naturalization Status | First papers filed |
| Occupation | Butcher |
| Industry | Grocery |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 900 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Cooper
Head · 1940 · age 72 · b. ~1868 · Minnesota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Olmsted-County, Minnesota
Open full size
1940 US Federal Census — Olmsted-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01943-00498)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Wingfield | 58 | Wife | Unemployed | Denmark |
| 42 | Vincent Wingfield | 26 | Son | Unemployed | Minnesota |
| 43 | Mathew J. Hanson | 34 | Head | Maintenance Dept | Minnesota |
| 44 | Ethel Hanson | 31 | Wife | — | Norway |
| 45 | Wallace E. Hanson | 9 | Son | — | Minnesota |
| 46 | Deanna M. Hanson | 5 | Daughter | — | Minnesota |
| 47 | William M. Miller | 56 | Head | Carpenter | Tennessee |
| 48 | Verna Mae Miller | 54 | Wife | — | Iowa |
| 49 | John Cooper THIS PERSON | 72 | Head | Butcher | England |
| 50 | Clara Cooper | 70 | Wife | — | England |
| 51 | Marian Fehrenkamp | 38 | Daughter | Colonel Hospital | England |
| 52 | Roy Ronald Fehrenkamp | 8 | Grandson | — | Minnesota |
| 53 | John Rothenbuhler | 29 | Head | Retail Delivery | Iowa |
| 54 | Ethel Rothenbuhler | 23 | Wife | — | Minnesota |
| 55 | Ronald Rothenbuhler | 3 | Son | — | Minnesota |
| 56 | Robert Allen Rothenbuhler | 1 | Son | — | Minnesota |
| 57 | Harry Vroman | 49 | Head | Farmer | Minnesota |
| 58 | Harriett Vroman | 49 | Wife | — | Iowa |
| 59 | Harry William Vroman | 21 | Son | Farmer | Iowa |
| 60 | Marjorie Vroman | 16 | Daughter | — | Iowa |
| 61 | Donald Vroman | 13 | Son | — | Iowa |
| 62 | Louis Skanson | 58 | Head | Farmer | Norway |
| 63 | Esther Skanson | 51 | Wife | — | Minnesota |
| 64 | Luther Skanson | 26 | Son | Landscape Gardener | Minnesota |
| 65 | William Geselle | 49 | Head | Farmer | Kansas |
| 66 | Emma Geselle | 49 | Wife | — | Minnesota |
| 67 | Lyndon Geselle | 16 | Son | — | N. Dak. |
| 68 | Ranson Geselle | 16 | Son | — | N. Dak. |
| 69 | Rachel Geselle | 11 | Daughter | — | Minnesota |
| 70 | David Geselle | 9 | Son | — | Minnesota |
| 71 | Nile Reading | 49 | Head | Farmer + Truck Driver | Minnesota |
| 72 | Thyra Reading | 48 | Wife | — | Minnesota |
| 73 | Shirley Reading | 21 | Son | Driver Of Gravel Truck | Minnesota |
| 74 | Harry Reading | 19 | Son | Farmer + Truck Driver | Minnesota |
| 75 | Earl Reading | 14 | Son | — | Minnesota |
| 76 | Phyllis Reading | 12 | Daughter | — | Minnesota |
| 77 | John Reading | 8 | Son | — | Minnesota |
| 78 | William Besty | 53 | Head | Labour Plasterer | Minnesota |
| 79 | Meta Besty | 48 | Wife | — | Wisconsin |
| 80 | Walter Broten | 32 | Head | Cement Work | Minnesota |
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)