JN
John Nicholson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Washington-County, Indiana
Our Model Tree links this John Nicholson across the 1910, 1920, 1930 and 1940 US Censuses in Washington-County, Indiana (XGBoost, ~Confirmed), with identified parents Frederick & James — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Indiana |
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Gibson Township |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Class of Worker | 90 |
| Highest Grade | No 6 |
| 1935 Residence | 15 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Gibson Township |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Nicholson | Son | — | 23 | ~1917 |
| John Nicholson | Son | — | 31 | ~1909 |
| Maud Nicholson | Spouse | — | 62 | ~1878 |
| Fred Nicholson | Head | — | 60 | ~1880 |
| Gabriel Nicholson | Son | — | 33 | ~1907 |
Census Appearances
1910
Washington, Indiana
Son, age
Washington, Indiana · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Washington, Indiana
Son, age 10
Washington, Indiana · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Washington, Indiana
Son, age 21
Washington, Indiana · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Laborer |
| Industry | Odd jobs |
| Class of Worker | VVVV W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Washington-County, Indiana
Son, age 31
Washington-County, Indiana · implied b. ~1909 — 5 household members
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Gibson Township |
| 1935 Residence (County) | Washington |
| Class of Worker | 90 |
| Highest Grade | No 6 |
| 1935 Residence | 15 |
| 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 Nicholson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frederick Nicholson (~0.92 confidence) and father James Nicholson (~0.92 confidence) and mother Irma Nicholson (~0.92 confidence) and mother Maud Nicholson (~0.92 confidence) and mother Maud Nicholson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frederick Nicholson
b. ~1880
Source father
● Household
· direct · ~0.92
Father
James Nicholson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Irma Nicholson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Maud Nicholson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Maud Nicholson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Nicholson
Son · 1940 · age 31 · b. ~1909 · Indiana
★ You are viewing this record
Sibling
William Nicholson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gabriel Nicholson
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Washington-County, Indiana
Open full size
1940 US Federal Census — Washington-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01107-00645)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Verne Fambush | 12 | Son | — | Indiana |
| 2 | William Riley | 9 | Grandson | — | Indiana |
| 3 | Charles Schmidt | 2 | Grandson | — | Indiana |
| 4 | Natalie Gasser | 18 | Servant | Farm | Indiana |
| 5 | Ardale D. Collins | 71 | Head | — | Tennessee |
| 6 | Sarah Collins | 70 | Wife | — | Tennessee |
| 7 | Abraham Collins | 30 | Son | — | Tennessee |
| 8 | Mattie Collins | 38 | Daughter | — | Tennessee |
| 9 | Ellsworth Mccleery | 60 | Head | — | Indiana |
| 10 | Edna Mccleery | 60 | Wife | — | Indiana |
| 11 | Jesse D. Filemos | 65 | Head | Farm | Indiana |
| 12 | Harry Filemos | 35 | Son | Farm | Indiana |
| 13 | Lee Filemos | 32 | Son | Sawmill | Indiana |
| 14 | Hugh Filemos | 24 | Son | Electric Co | Indiana |
| 15 | Homer W. Bryant | 62 | Head | Farm | Indiana |
| 16 | Ada Bryant | 57 | Wife | Farm | Indiana |
| 17 | Ray Bryant | 21 | Son | — | Indiana |
| 18 | Joseph Smith | 20 | Head | W.P.A. | Indiana |
| 19 | Willie M. Smith | 20 | Wife | — | Tennessee |
| 20 | Nellie M. Smith | 1 | Daughter | — | Indiana |
| 21 | Joseph P. Cheatham | 61 | Head | Farm | Kentucky |
| 22 | Marietta Cheatham | 48 | Wife | — | Kentucky |
| 23 | Russell Cheatham | 19 | Son | — | Kentucky |
| 24 | Sally B. Cheatham | 16 | Daughter | — | Kentucky |
| 25 | Elza Cheatham | 10 | Son | — | Kentucky |
| 26 | Alfred Cheatham | 11 | Son | — | Kentucky |
| 27 | Marietta Cheatham | 10 | Daughter | — | Kentucky |
| 28 | Francis Babbs | 57 | Head | Private Project | Indiana |
| 29 | Mattie Babbs | 46 | Wife | — | Indiana |
| 30 | Charles Babbs | 23 | Son | — | Indiana |
| 31 | Lawrence Babbs | 20 | Son | — | Indiana |
| 32 | Blanche Babbs | 18 | Daughter | — | Indiana |
| 33 | Lama Babbs | 15 | Daughter | — | Indiana |
| 34 | Mary Babbs | 12 | Daughter | — | Indiana |
| 35 | Gladys Babbs | 5 | Daughter | — | Indiana |
| 36 | Fred Nicholson | 60 | Head | Farm | Indiana |
| 37 | Maud Nicholson | 62 | Wife | — | Indiana |
| 38 | Gabriel Nicholson | 33 | Son | — | Indiana |
| 39 | John Nicholson THIS PERSON | 31 | Son | — | Indiana |
| 40 | William Nicholson | 23 | Son | N.Y.A. | Indiana |
Pedigree Summary
John + 2 siblings
Gen 1 · 5 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)