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John Schaffer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dakota-County, Minnesota
Our Model Tree links this John Schaffer across the 1920, 1930 and 1940 US Censuses in Dakota-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & Elizabeth — first a head (b.~1900), then head of a 10-person household.
Age 40
b. ~1900
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dakota-County, Minnesota |
| Surname | Schaffer |
| Given Name | John P. W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Hampton Twp. |
| 1935 Residence (County) | Dakota |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Farmer |
| Township / Ward | Hampton Twp |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Schaffer | Son | — | 7 | ~1933 |
| Ursula Schaffer | Daughter | — | 18 | ~1922 |
| Marie Schaffer | Spouse | — | 42 | ~1898 |
| Henry Schaffer | Son | — | 15 | ~1925 |
| Ruth Schaffer | Daughter | — | 11 | ~1929 |
| Francis Schaffer | Son | — | 16 | ~1924 |
| Charles Schaffer | Son | — | 2 | ~1938 |
| John Schaffer | Head | — | 40 | ~1900 |
| Mary Schaffer | Daughter | — | 13 | ~1927 |
| Patricia Schaffer | Daughter | — | 1 | ~1939 |
Census Appearances
1920
Dakota, Minnesota
Son, age 18
Dakota, Minnesota · implied b. ~1902 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaffer |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | farm laborer |
| Industry | home farm |
| Class of Worker | W |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Dakota, Minnesota
Head, age 28
Dakota, Minnesota · implied b. ~1902 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaffer |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 23 |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Radio Set | R |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Dakota-County, Minnesota
Head, age 40
Dakota-County, Minnesota · implied b. ~1900 — 10 household members
| Surname | Schaffer |
| Given Name | John P. W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Hampton Twp. |
| 1935 Residence (County) | Dakota |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Schaffer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Schaffer (~0.92 confidence) and mother Elizabeth Schaffer (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Schaffer
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Schaffer
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Schaffer
Head · 1940 · age 40 · b. ~1900 · 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 — Dakota-County, Minnesota
Open full size
1940 US Federal Census — Dakota-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01917-00190)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Adam Schiller | 40 | Head | Farmer | Minnesota |
| 42 | Susan Schiller | 37 | Wife | — | Minnesota |
| 43 | Herbert Schiller | 12 | Son | — | Minnesota |
| 44 | Bernice Schiller | 10 | Daughter | — | Minnesota |
| 45 | Leonard Schiller | 8 | Son | — | Minnesota |
| 46 | Joseph Schiller | 6 | Son | — | Minnesota |
| 47 | Lawrence Rother | 17 | Hired Man | Farm Laborer | Minnesota |
| 48 | Herbert J. Nicolai | 25 | Head | Farmer | Minnesota |
| 49 | Henry Nicolai | 22 | Brother | Farmer | Minnesota |
| 50 | Joseph J. Rech | 39 | Head | Farmer | Minnesota |
| 51 | Anna Rech | 41 | Wife | — | Minnesota |
| 52 | Luella Rech | 14 | Daughter | — | Minnesota |
| 53 | Delmar Rech | 12 | Daughter | — | Minnesota |
| 54 | Joseph Jr. Rech | 11 | Son | — | Minnesota |
| 55 | Mildred Rech | 10 | Daughter | — | Minnesota |
| 56 | Lois Rech | 8 | Daughter | — | Minnesota |
| 57 | Rita Rech | 5 | Daughter | — | Minnesota |
| 58 | Arlene Rech | 2 | Daughter | — | Minnesota |
| 59 | John P. W. Schaffer THIS PERSON | 40 | Head | Farmer | Minnesota |
| 60 | Marie Schaffer | 42 | Wife | — | Minnesota |
| 61 | Ursula Schaffer | 18 | Daughter | — | Minnesota |
| 62 | Francis Schaffer | 16 | Son | — | Minnesota |
| 63 | Henry Schaffer | 15 | Son | — | Minnesota |
| 64 | Mary Catherine Schaffer | 13 | Daughter | — | Minnesota |
| 65 | Ruth Charlotte Schaffer | 11 | Daughter | — | Minnesota |
| 66 | John Edward Schaffer | 7 | Son | — | Minnesota |
| 67 | Charles F. Schaffer | 2 | Son | — | Minnesota |
| 68 | Patricia Schaffer | 1 | Daughter | — | Minnesota |
| 69 | Geo. J. Brockman | 29 | Head | Farmer | Minnesota |
| 70 | Mathilda Brockman | 22 | Wife | — | Minnesota |
| 71 | Arnold Brockman | 2 | Son | — | Minnesota |
| 72 | Edward Schaffer | 21 | Hired Hand | Farmhand | Minnesota |
| 73 | Nick Wieland | 30 | Head | Farmer | Minnesota |
| 74 | Anna Wieland | 22 | Wife | — | Minnesota |
| 75 | Jo Ann Wieland | 2 | Daughter | — | Minnesota |
| 76 | Deloris Wieland | 0 | Daughter | — | Minnesota |
| 77 | Math Wieland | 70 | Father | — | Minnesota |
| 78 | John D. Wieland | 39 | Head | Farmer | Minnesota |
| 79 | Laura Wieland | 40 | Wife | — | Minnesota |
| 80 | Al Groth | 36 | Hired Man | Farmhand | North Dakota |
Pedigree Summary
John
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)