JN
John Nichols — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Iowa
Our Model Tree links this John Nichols across the 1920, 1930 and 1940 US Censuses in Marion-County, Iowa (XGBoost, ~Confirmed), with identified parents Lucy & Clarence — first a son (b.~1915), then head of a 11-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Iowa |
| Surname | Nichols |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Knoxville City |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Water Plant |
| Industry | City |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Water Plant |
| Township / Ward | Knoxville City |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lucretia Easter | Daughter | — | 4 | ~1936 |
| Pansie Easter | Daughter | — | 6 | ~1934 |
| Clarence Nichols | Head | — | 52 | ~1888 |
| Frank Easter | Other | — | 48 | ~1892 |
| Frank Easter | Son | — | 2 | ~1938 |
| Kenneth Nichols | Son | — | 13 | ~1927 |
| John Nichols | Son | — | 25 | ~1915 |
| Lester Nichols | Son | — | 16 | ~1924 |
| Virgil Nichols | Son | — | 23 | ~1917 |
| Nellie Nichols | Spouse | — | 53 | ~1887 |
| Hazel Easter | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Marion, Iowa
Son, age 4
Marion, Iowa · implied b. ~1916 — 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 | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Marion, Iowa
Son, age 15
Marion, Iowa · implied b. ~1915 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marion-County, Iowa
Son, age 25
Marion-County, Iowa · implied b. ~1915 — 11 household members
| Surname | Nichols |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Knoxville City |
| 1935 Residence (County) | Marion |
| Occupation | Water Plant |
| Industry | City |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Lucy Nichols (~0.85 confidence) and father Clarence Nichols (~0.92 confidence) and father Clarence Nichols (~0.92 confidence) and mother Nellie Nichols (~0.92 confidence) and father Clarence Nichols (~0.92 confidence) and mother Lillie Nichols (~0.92 confidence) and mother Hazel Easter (~0.60 confidence). The pedigree spans 2 generations with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Mother
Lucy Nichols
b. ~1851
Source father>mother
● Household
· direct · ~0.85
Father
Clarence Nichols
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Clarence Nichols
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Nellie Nichols
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Clarence Nichols
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Lillie Nichols
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Hazel Easter
b. ~1912
Source mother
● Household
· direct · ~0.6
This person
Anchor record
John Nichols
Son · 1940 · age 25 · b. ~1915 · Iowa
★ You are viewing this record
Sibling
Frank Easter
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pansie Easter
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Nichols
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virgil Nichols
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Nichols
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucretia Easter
Sibling · 1940 · age 4
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 — Marion-County, Iowa
Open full size
1940 US Federal Census — Marion-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01181-00213)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jimmie Wolfe | 1 | Son | — | Wisconsin |
| 2 | Sandra Wolfe | 0 | Daughter | — | Iowa |
| 3 | Wm G Bowman | 74 | Head | Farmer | Indiana |
| 4 | Margaret Bowman | 76 | Wife | — | Indiana |
| 5 | W H Morre | 47 | Head | Dairy | Iowa |
| 6 | Lillah Morre | 43 | Wife | — | Iowa |
| 7 | Sarah E Frazier | 81 | Mother-in-law | — | Iowa |
| 8 | S E Cronkhite | 72 | Head | Chief Police | Iowa |
| 9 | Martha E Cronkhite | 73 | Wife | — | Iowa |
| 10 | R V Mckeever | 66 | Head | Emp Clerk | Iowa |
| 11 | Alma E Mckeever | 44 | Wife | — | Iowa |
| 12 | Betty Mckeever | 14 | Daughter | — | Iowa |
| 13 | Jean Mckeever | 9 | Son | — | Iowa |
| 14 | Don L Remy | 43 | Head | County Clerk | Iowa |
| 15 | Anastacia Remy | 38 | Wife | — | Iowa |
| 16 | Paul Laverne Remy | 14 | Son | — | Iowa |
| 17 | Chas H Redlin | 67 | Father | — | Iowa |
| 18 | Edward E Mcgovern | 33 | Head | Dentist | Iowa |
| 19 | Elizabeth Mcgovern | 33 | Wife | — | Iowa |
| 20 | Mary Linn Mcgovern | 9 | Daughter | — | Iowa |
| 21 | Berta Joe Mcgovern | 8 | Daughter | — | Iowa |
| 22 | Patricia Lee Mcgovern | 6 | Daughter | — | Iowa |
| 23 | Edward Mcgovern | 1 | Son | — | Iowa |
| 24 | Katherine Provenzano | 21 | Maid | Maid | Iowa |
| 25 | Lester L Gervais | 32 | Head | Attendant | Iowa |
| 26 | Eloise Gervais | 36 | Wife | — | Iowa |
| 27 | Sandra Lou Gervais | 4 | Daughter | — | Iowa |
| 28 | Clarence Nichols | 52 | Head | Carpenter | Kansas |
| 29 | Nellie Nichols | 53 | Wife | — | Iowa |
| 30 | John Nichols THIS PERSON | 25 | Son | Water Plant | Iowa |
| 31 | Virgil Nichols | 23 | Son | Trucker | Iowa |
| 32 | Lester Nichols | 16 | Son | — | Iowa |
| 33 | Kenneth Nichols | 13 | Son | — | Iowa |
| 34 | Frank Easter | 48 | Son in law | Shovel Operator | Iowa |
| 35 | Hazel Easter | 28 | Wife | — | Iowa |
| 36 | Pansie Easter | 6 | Daughter | — | Iowa |
| 37 | Lucretia Sue Easter | 4 | Daughter | — | Iowa |
| 38 | Frank Jr. Easter | 2 | Son | — | Iowa |
| 39 | Matilda Leonard | 66 | Head | — | Iowa |
| 40 | Edmond Roman | 25 | Son in law | Laborer | Iowa |
Pedigree Summary
John + 6 siblings
Gen 1 · 6 parents
~0.87
Gen 2 · 1 grandparents
~0.85
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)