JN
John Nichols — 1940 US Census Record
Model Tree available1940 United States Federal Census · Vermillion-County, Indiana
Our Model Tree links this John Nichols across the 1920, 1930 and 1940 US Censuses in Vermillion-County, Indiana (XGBoost, ~Confirmed), with identified parents Blinn & Carrie — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Vermillion-County, Indiana |
| Surname | Nichols |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Vermillion |
| Additional Details | |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Clinton City |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Blinn Nichols | Head | — | 54 | ~1886 |
| Nellie Ackelmire | Other | — | 83 | ~1857 |
| John Nichols | Son | — | 21 | ~1919 |
| George Nichols | Son | — | 23 | ~1917 |
| Carrie Nichols | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Vermillion, Indiana
Son, age 1
Vermillion, Indiana · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholas |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Vermillion, Indiana
Son, age 11
Vermillion, Indiana · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholas |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Vermillion-County, Indiana
Son, age 21
Vermillion-County, Indiana · implied b. ~1919 — 5 household members
| Surname | Nichols |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Vermillion |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| 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 Nichols across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Blinn Nichols (~0.92 confidence) and mother Carrie Nichols (~0.92 confidence) and mother Carrie Nicholas (~0.92 confidence) and father William Nicholas (~0.92 confidence) and father W Nicholas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Blinn Nichols
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Carrie Nichols
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Carrie Nicholas
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
William Nicholas
b. ~1886
Source father
● Household
· direct · ~0.92
Father
W Nicholas
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Nichols
Son · 1940 · age 21 · b. ~1919 · Indiana
★ You are viewing this record
Sibling
George Nichols
Sibling · 1940 · age 23
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 — Vermillion-County, Indiana
Open full size
1940 US Federal Census — Vermillion-County, Indiana
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01102-00117)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Betty Oliver | 13 | Daughter | — | Illinois |
| 42 | Alphonse J. Murdock | 41 | Head | Cashier | Indiana |
| 43 | Mary Murdock | 35 | Sister | — | Indiana |
| 44 | Mike Castelina | 60 | Head | Owner | Italy |
| 45 | Frances Castelina | 57 | Wife | — | Italy |
| 46 | P. J. Phillip | 43 | Head | Owner | Greece |
| 47 | Mary Phillip | 31 | Wife | — | Michigan |
| 48 | Dominic Pesavento | 58 | Head | Buckers | Italy |
| 49 | Mary Pesavento | 50 | Wife | — | Hungary |
| 50 | Valeria Pesavento | 26 | Daughter | Waitress | Indiana |
| 51 | Raymond Pesavento | 24 | Son | New Worker | Indiana |
| 52 | Mary Pesavento | 16 | Daughter | — | Indiana |
| 53 | John Pesavento | 15 | Son | — | Indiana |
| 54 | Martha Pesavento | 12 | Daughter | — | Indiana |
| 55 | Jane Pesavento | 7 | Daughter | — | Indiana |
| 56 | Arch A. Nolan | 45 | Head | Farm Manager | Indiana |
| 57 | Esther Nolan | 43 | Wife | Bookkeeper | Indiana |
| 58 | Charles Crane | 53 | Head | Smoke House | Indiana |
| 59 | Mae Crane | 50 | Wife | Waitress | Indiana |
| 60 | Donald Crane | 16 | Son | — | Indiana |
| 61 | Rita Coleman | 28 | Head | — | Pennsylvania |
| 62 | Jackie B. Coleman | 5 | Son | — | Indiana |
| 63 | Robert D. Coleman | 2 | Son | — | Indiana |
| 64 | Alexandra Dunn | 60 | Father | Timberman | Scotland |
| 65 | Katherine Dunn | 60 | Mother | — | Scotland |
| 66 | Roy Butts | 41 | Head | Salesman | Indiana |
| 67 | Thelma Butts | 35 | Wife | — | Indiana |
| 68 | Margaret M. Butts | 14 | Daughter | — | Indiana |
| 69 | Blinn W. Nichols | 54 | Head | Owner | Indiana |
| 70 | Carrie P. Nichols | 54 | Wife | — | Indiana |
| 71 | George Nichols | 23 | Son | — | Indiana |
| 72 | John Nichols THIS PERSON | 21 | Son | — | Indiana |
| 73 | Nellie Ackelmire | 83 | Mother-in-law | — | Indiana |
| 77 | Marshall Frist | 43 | Head | Funeral Director | Indiana |
| 78 | Marjorie Frist | 38 | Wife | — | Indiana |
| 79 | Harold B. Frist | 17 | Son | — | Indiana |
| 80 | Wayne E. Frist | 14 | Son | — | Indiana |
Pedigree Summary
John + 1 sibling
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)