JN
John Nichols — 1940 US Census Record
Model Tree available1940 United States Federal Census · Walworth-County, Wisconsin
Our Model Tree links this John Nichols across the 1920, 1930 and 1940 US Censuses in Walworth-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Nellie & Charles — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Walworth-County, Wisconsin |
| Surname | Nichols |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Linn town |
| 1935 Residence (County) | Walworth |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 90 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Farmer |
| Township / Ward | Linn Town |
| Est. Birth Year | ~1908 |
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 |
|---|---|---|---|---|
| Barbara Nichols | Daughter | — | 1 | ~1939 |
| Elizabeth Nichols | Daughter | — | 5 | ~1935 |
| John Nichols | Head | — | 32 | ~1908 |
| Lois Nichols | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Walworth, Wisconsin
Son, age 12
Walworth, Wisconsin · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Nebraska |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Walworth, Wisconsin
Son, age 22
Walworth, Wisconsin · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Walworth-County, Wisconsin
Head, age 32
Walworth-County, Wisconsin · implied b. ~1908 — 4 household members
| Surname | Nichols |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Linn town |
| 1935 Residence (County) | Walworth |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 90 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Nichols across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Nellie Nichols (~0.92 confidence) and father Charles Nichols (~0.92 confidence) and father Charles Nichols (~0.92 confidence) and mother Helen Nichols (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Nellie Nichols
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
Charles Nichols
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Charles Nichols
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Helen Nichols
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Nichols
Head · 1940 · age 32 · b. ~1908 · 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 — Walworth-County, Wisconsin
Open full size
1940 US Federal Census — Walworth-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04531-00824)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry O. Moser | 60 | Head | Farmer | Norway |
| 2 | Hanna Moser | 40 | Wife | — | Illinois |
| 3 | Donald Moser | 27 | Son | Farmer | Illinois |
| 4 | Dorothy G. Moser | 20 | Daughter | Servant | Minnesota |
| 5 | Thomas A. Moser | 19 | Son | Farm Laborer | Minnesota |
| 6 | Lawrence Moser | 12 | Son | — | Minnesota |
| 7 | William Moser | 7 | Son | — | Iowa |
| 8 | William O. Merriam | 45 | Head | Farmer | Wisconsin |
| 9 | Bernice Merriam | 42 | Wife | — | Iowa |
| 10 | Donald Merriam | 15 | Son | — | Iowa |
| 11 | Margaret Merriam | 12 | Daughter | — | Wisconsin |
| 12 | Leo Schriener | 27 | Hired hand | Farm Laborer | Wisconsin |
| 13 | Peter Vander Pal | 30 | Head | Farm Manager | Holland |
| 14 | Minnie Vander Pal | 31 | Wife | — | Holland |
| 15 | Jeanette Vander Pal | 8 | Daughter | — | Illinois |
| 16 | Robert Vander Pal | 2 | Son | — | Illinois |
| 17 | Gilbert Bosma | 29 | Brother-in-law | Farm Laborer | Holland |
| 18 | Esther Bosma | 24 | Sister-in-law | Servant | Illinois |
| 19 | James Bosma | 2 | Nephew | — | Illinois |
| 20 | George Mathison | 62 | Head | Farmer | Illinois |
| 21 | May L. Mathison | 58 | Wife | — | Illinois |
| 22 | Stewart Mathison | 26 | Son | Farm Laborer | Illinois |
| 23 | George Pluess | 41 | Head | Farm Laborer | Wisconsin |
| 24 | Mary A. Pluess | 42 | Wife | — | Wisconsin |
| 25 | Kenneth Pluess | 14 | Son | — | Wisconsin |
| 26 | John L. Nichols THIS PERSON | 32 | Head | Farmer | Wisconsin |
| 27 | Lois M. Nichols | 34 | Wife | — | Wisconsin |
| 28 | Elizabeth H. Nichols | 5 | Daughter | — | Wisconsin |
| 29 | Barbara A. Nichols | 1 | Daughter | — | Wisconsin |
| 30 | George Hogoff | 32 | Head | Farm Laborer | Wisconsin |
| 31 | Lois Hogoff | 32 | Wife | — | Wisconsin |
| 32 | August O. Schutt | 43 | Head | Farm Manager | Wisconsin |
| 33 | Lorena Schutt | 40 | Wife | — | Wisconsin |
| 34 | Daniel Bolton | 29 | Hired Man | Farm Laborer | Wisconsin |
| 35 | Gustav A. Scavell | 58 | Head | Farmer | Sweden |
| 36 | Anna Scavell | 47 | Wife | — | Wisconsin |
| 37 | Gustav K. Scavell | 14 | Son | — | Illinois |
| 38 | Earl H. Scavell | 9 | Son | — | Wisconsin |
| 39 | Herman Voltz | 59 | Head | Farmer | Wisconsin |
| 40 | Martha Voltz | 52 | Wife | — | Wisconsin |
Pedigree Summary
John
Gen 1 · 4 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)