JN
John Nicholson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fairfax-County, Virginia
Our Model Tree links this John Nicholson across the 1930 and 1940 US Censuses in Fairfax-County, Virginia (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Male
Son
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fairfax-County, Virginia |
| Surname | Nicholson |
| Given Name | John H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Prince William |
| Additional Details | |
| Occupation | Carpenter Helper |
| Industry | Building Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 5 |
| 1935 Residence | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Carpenter Helper |
| Township / Ward | Clifton Station |
| Est. Birth Year | ~1921 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Nicholson | Daughter | — | 9 | ~1931 |
| Edgar Nicholson | Son | — | 13 | ~1927 |
| John Nicholson | Son | — | 19 | ~1921 |
| Martha Nicholson | Spouse | — | 52 | ~1888 |
| Foster Nicholson | Head | — | 54 | ~1886 |
| Joyce Nicholson | Daughter | — | 11 | ~1929 |
| Clyde Nicholson | Son | — | 16 | ~1924 |
| Edward Nicholson | Son | — | 13 | ~1927 |
Census Appearances
1930
Prince William, …
Son, age 9
Prince William, Virginia · implied b. ~1921 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Fairfax-County, Virginia
Son, age 19
Fairfax-County, Virginia · implied b. ~1921 — 8 household members
| Surname | Nicholson |
| Given Name | John H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Prince William |
| Occupation | Carpenter Helper |
| Industry | Building Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 5 |
| 1935 Residence | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Nicholson
Son · 1940 · age 19 · b. ~1921 · Virginia
★ You are viewing this record
Sibling
Clyde Nicholson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Nicholson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edgar Nicholson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Nicholson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Nicholson
Sibling · 1940 · age 9
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 — Fairfax-County, Virginia
Open full size
1940 US Federal Census — Fairfax-County, Virginia
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-04261-00059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herbert F. Groves | 56 | head | Farmer | Virginia |
| 2 | William B. Boals | 54 | head | Farmer | Texas |
| 3 | Samuel H. Boals | 20 | son | Farmer | Virginia |
| 4 | Geralda C. Boals | 29 | daughter-in-law | — | Michigan |
| 5 | Newton F. Sayers | 49 | head | Plant Operator | Virginia |
| 6 | Zora E. Sayers | 47 | wife | — | North Carolina |
| 7 | C. Opal Sayers | 12 | daughter | — | Virginia |
| 8 | Hiram S. Sayers | 11 | son | — | Virginia |
| 9 | Nita D. Sayers | 3 | daughter | — | Virginia |
| 10 | George W. Carroll | 49 | head | Carpenter | Pennsylvania |
| 11 | Bessie V. Carroll | 39 | wife | — | Iowa |
| 12 | Charles R. Hickey | 79 | head | Farmer | Virginia |
| 13 | Ira M. Crouch | 60 | head | Farmer | Virginia |
| 14 | Edward W. Steel | 55 | brother-in-law | Laborer | Virginia |
| 15 | Mattie J. Steel | 52 | sister | — | Virginia |
| 16 | Dorothy V. Steel | 20 | niece | — | Virginia |
| 17 | Fred G. Casperton | 52 | head | Farmer | West Virginia |
| 18 | Sally S. Casperton | 49 | wife | Cook | West Virginia |
| 19 | Lucy Casperton | 18 | daughter | — | West Virginia |
| 20 | Earl G. Casperton | 22 | son | Carpenter | West Virginia |
| 21 | Mary S. Casperton | 19 | daughter-in-law | — | Virginia |
| 22 | Foster J. Nicholson | 54 | head | Farmer | Virginia |
| 23 | Martha S. Nicholson | 52 | wife | — | Virginia |
| 24 | John H. Nicholson THIS PERSON | 19 | son | Carpenter Helper | Virginia |
| 25 | Clyde J. Nicholson | 16 | son | Farmer | Virginia |
| 26 | Edward L. Nicholson | 13 | son | — | Virginia |
| 27 | Edgar L. Nicholson | 13 | son | — | Virginia |
| 28 | Joyce Nicholson | 11 | daughter | — | Virginia |
| 29 | Mary Lou Nicholson | 9 | daughter | — | Virginia |
| 30 | William G. Keith | 43 | head | Farmer | Virginia |
| 31 | C. May Keith | 59 | wife | — | Virginia |
| 32 | James W. Keith | 34 | son | Farmer | Virginia |
| 33 | Howard R. Keith | 16 | son | — | Virginia |
| 34 | Carl L. Keith | 43 | brother-in-law | Farmer | Virginia |
| 35 | Howard J. West | 58 | head | Rural Mail Carrier | New York |
| 36 | Maude L. West | 59 | wife | — | Massachusetts |
| 37 | Herbert D. Casperton | 30 | head | Carpenter | West Virginia |
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)