JC
John Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bayfield-County, Wisconsin
Our Model Tree links this John Campbell across the 1920, 1930 and 1940 US Censuses in Bayfield-County, Wisconsin (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bayfield-County, Wisconsin |
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Grand View |
| 1935 Residence (County) | Bayfield |
| Additional Details | |
| Occupation | Ass't Postmaster |
| Industry | Gov't Post Office |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | H 4 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Ass'T Postmaster |
| Township / Ward | Pratt Town |
| Est. Birth Year | ~1915 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Judith Campbell | Daughter | — | 3 | ~1937 |
| John Campbell | Head | — | 25 | ~1915 |
| Myrtle Campbell | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Bayfield, Wisconsin
Son, age 5
Bayfield, Wisconsin · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Bayfield, Wisconsin
Son, age 15
Bayfield, Wisconsin · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Bayfield-County, Wisconsin
Head, age 25
Bayfield-County, Wisconsin · implied b. ~1915 — 3 household members
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Grand View |
| 1935 Residence (County) | Bayfield |
| Occupation | Ass't Postmaster |
| Industry | Gov't Post Office |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | H 4 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Campbell (~0.92 confidence) and father John Campbell (~0.92 confidence) and mother Emma Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Campbell
b. ~1893
Source father
● Household
· direct · ~0.92
Father
John Campbell
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Emma Campbell
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Campbell
Head · 1940 · age 25 · b. ~1915 · Wisconsin
★ 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 — 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-t0627-04458-00370)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martha Mrs. Olson | 63 | Head | — | Norway |
| 2 | Magnus J. Olson | 47 | Son | Laborer | Norway |
| 3 | Ester J. Olson | 24 | Daughter | — | Wisconsin |
| 4 | Al Nehring | 46 | Head | Carpenter | Wisconsin |
| 5 | Magna H. Nehring | 42 | Wife | — | Norway |
| 6 | Betty J. Nehring | 15 | Daughter | — | Wisconsin |
| 7 | Arthur Gustafson | 44 | Head | — | Wisconsin |
| 8 | Anne M. Gustafson | 39 | Wife | — | Wisconsin |
| 9 | George D. Gustafson | 15 | Son | — | Wisconsin |
| 10 | Leland F. Gustafson | 13 | Son | — | Wisconsin |
| 11 | Frank G. Gustafson | 12 | Son | — | Wisconsin |
| 12 | Donald H. Gustafson | 10 | Son | — | Wisconsin |
| 13 | Arthur C. Gustafson | 6 | Son | — | Wisconsin |
| 14 | James Gustafson | 5 | Son | — | Wisconsin |
| 15 | Darlene A. Gustafson | 3 | Daughter | — | Wisconsin |
| 16 | Fritz Gustafson | 2 | Son | — | Wisconsin |
| 17 | Albert Glass | 53 | Head | Janitor | Iowa |
| 18 | Elsie M. Glass | 50 | Wife | — | Wisconsin |
| 19 | Delbert D. Glass | 10 | Son | — | Wisconsin |
| 20 | Ole Rice | 69 | Head | — | Minnesota |
| 21 | Harriet A. Dimitad | 47 | Head | Operator | Norway |
| 22 | George P. Gegen | 38 | Head | Operator | Minnesota |
| 23 | Louise A. Gegen | 32 | Wife | — | Wisconsin |
| 24 | Rose A. Gegen | 2 | Daughter | — | Wisconsin |
| 25 | Edward L. Anderson | 43 | Head | Operator | Wisconsin |
| 26 | Irene H. Anderson | 32 | Wife | — | Wisconsin |
| 27 | Elaine J. Anderson | 9 | Daughter | — | Wisconsin |
| 28 | Erick W. Nelson | 45 | Head | Laborer | Wisconsin |
| 29 | Florence Geyen | 33 | Housekeeper | Laundress | Minnesota |
| 30 | Betty J. Nelson | 8 | Daughter | — | Wisconsin |
| 31 | Robert M. Nelson | 8 | Son | — | Wisconsin |
| 32 | Donald Nelson | 3 | Son | — | Wisconsin |
| 33 | John Campbell THIS PERSON | 25 | Head | Ass'T Postmaster | Wisconsin |
| 34 | Myrtle Campbell | 27 | Wife | — | Wisconsin |
| 35 | Judith Campbell | 3 | Daughter | — | Wisconsin |
| 36 | Albert Beckman | 73 | Head | — | Sweden |
| 37 | Victor C. Wallin | 40 | Head | — | Wisconsin |
| 38 | Edith C. Wallin | 34 | Wife | — | Wisconsin |
| 39 | Verna A. Wallin | 17 | Daughter | — | Wisconsin |
| 40 | Dudley D. Wallin | 16 | Son | — | Wisconsin |
Pedigree Summary
John
Gen 1 · 3 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)