JB
John Black — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bayfield-County, Wisconsin
Our Model Tree links this John Black across the 1920, 1930 and 1940 US Censuses in Bayfield-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1876), then head of a 4-person household.
Age 64
b. ~1876
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bayfield-County, Wisconsin |
| Surname | Black |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Town of Bayfield |
| 1935 Residence (County) | Bayfield |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm owner |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Farmer |
| Township / Ward | Town Of Bayfield |
| Est. Birth Year | ~1876 |
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 |
|---|---|---|---|---|
| John Black | Head | — | 64 | ~1876 |
| John Black | Son | — | 19 | ~1921 |
| Howard Black | Son | — | 15 | ~1925 |
| Ruby Black | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Bayfield, Wisconsin
Head, age 44
Bayfield, Wisconsin · implied b. ~1876 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Dairy Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Bayfield, Wisconsin
Head, age 53
Bayfield, Wisconsin · implied b. ~1877 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 42 |
| Father's Birthplace | Germany (Saxony) |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Veteran | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Bayfield-County, Wisconsin
Head, age 64
Bayfield-County, Wisconsin · implied b. ~1876 — 4 household members
| Surname | Black |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Town of Bayfield |
| 1935 Residence (County) | Bayfield |
| Occupation | Farmer |
| Industry | Farm owner |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Black 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 Black
Head · 1940 · age 64 · b. ~1876 · Wisconsin
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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 — Bayfield-County, Wisconsin
Open full size
1940 US Federal Census — Bayfield-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04458-00073)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Sharrett | 66 | Head | Farmer | England |
| 2 | Maude M. Sharrett | 56 | Wife | Housekeeper | Wisconsin |
| 3 | Ione Lund | 32 | Daughter | Librarian | South Dakota |
| 4 | Miles Lund | 11 | Grandson | — | Wisconsin |
| 5 | George Lund | 9 | Grandson | — | Wisconsin |
| 6 | Eilene Lund | 4 | Granddaughter | — | Illinois |
| 7 | O. L. Drumm | 37 | Head | Laborer | Iowa |
| 8 | Faith Drumm | 26 | Wife | — | Iowa |
| 9 | Geraldine Drumm | 6 | Daughter | — | Wisconsin |
| 10 | Nancy Drumm | 4 | Daughter | — | Wisconsin |
| 11 | A. R. Shumway | 52 | Head | Farmer | Wisconsin |
| 12 | Hilda Shumway | 51 | Wife | — | Wisconsin |
| 13 | John M. Black THIS PERSON | 64 | Head | Farmer | Indiana |
| 14 | Ruby Black | 53 | Wife | — | Indiana |
| 15 | John M. Jr. Black | 19 | Son | Student Chemist | Wisconsin |
| 16 | Howard S. Black | 15 | Son | — | Wisconsin |
| 17 | E. E. Meyers | 72 | Head | Farmer | Minnesota |
| 18 | Maud Meyers | 67 | Wife | — | Minnesota |
| 19 | Ed. L. Lower | 65 | Head | — | Wisconsin |
| 20 | Irene Lower | 66 | Wife | — | Wisconsin |
| 21 | Margaret Maccready | 69 | Head | Skipper | Scotland |
| 22 | Ernest Nordin | 51 | Head | Farmer | Minnesota |
| 23 | Alfreda Nordin | 50 | Wife | — | Wisconsin |
| 24 | Muriel Nordin | 21 | Daughter | Cashier | Wisconsin |
| 25 | M. M. Wunkel | 46 | Head | Farmer | Indiana |
| 26 | Hilda Wunkel | 46 | Wife | — | Wisconsin |
| 27 | Mavis A. Wunkel | 15 | Daughter | — | Wisconsin |
| 28 | Shirley Jean Wunkel | 13 | Daughter | — | Nebraska |
| 29 | Elmer Bethel | 57 | Head | Janitor | Iowa |
| 30 | Jennie Bethel | 50 | Wife | — | Iowa |
| 31 | La Verne Bethel | 20 | Son | Laborer | Wisconsin |
| 32 | Kenneth Bethel | 18 | Son | — | Wisconsin |
| 33 | Knute Thorsen | 70 | Head | — | Norway |
| 34 | Emma Thorsen | 53 | Wife | — | Wisconsin |
| 35 | George Crawford | 79 | Boarder | — | Canada |
| 36 | Albert Becht | 43 | Head | Auto Mechanic | Michigan |
| 37 | Hazel Becht | 36 | Wife | — | Wisconsin |
| 38 | Maureen Becht | 9 | Daughter | — | Michigan |
| 39 | Henry Koopman | 62 | Head | — | Iowa |
| 40 | Bertha Koopman | 63 | Wife | — | 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)