JK
John Kirby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wythe-County, Virginia
Our Model Tree links this John Kirby across the 1930 and 1940 US Censuses in Wythe-County, Virginia (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 10-person household.
Age 21
b. ~1919
Male
Son
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wythe-County, Virginia |
| Surname | Kirby |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Mt. Chiswell District |
| 1935 Residence (County) | Wythe |
| Additional Details | |
| Occupation | laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Laborer |
| Township / Ward | Mt Chiswell District |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ethel Kirby | Daughter | — | 19 | ~1921 |
| Mattie Kirby | Spouse | — | 48 | ~1892 |
| Edwin Kirby | Son | — | 24 | ~1916 |
| J Kirby | Head | — | 50 | ~1890 |
| Robert Kirby | Son | — | 18 | ~1922 |
| James Kirby | Son | — | 12 | ~1928 |
| David Kirby | Son | — | 6 | ~1934 |
| Roberta Kirby | Other | — | 18 | ~1922 |
| John Kirby | Son | — | 21 | ~1919 |
| Virginia Kirby | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Wythe, Virginia
Son, age 11
Wythe, Virginia · implied b. ~1919 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Wythe-County, Virginia
Son, age 21
Wythe-County, Virginia · implied b. ~1919 — 10 household members
| Surname | Kirby |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Mt. Chiswell District |
| 1935 Residence (County) | Wythe |
| Occupation | laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Kirby across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kirby
Son · 1940 · age 21 · b. ~1919 · Virginia
★ You are viewing this record
Sibling
Robert Kirby
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Kirby
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Kirby
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Kirby
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kirby
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Kirby
Sibling · 1940 · age 24
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 — Wythe-County, Virginia
Open full size
1940 US Federal Census — Wythe-County, Virginia
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04303-00176)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | J. E. Kirby | 50 | Head | Operator | Virginia |
| 3 | Mattie Kirby | 48 | Wife | — | Virginia |
| 4 | John Kirby THIS PERSON | 21 | Son | Laborer | Virginia |
| 5 | Ethel Kirby | 19 | Daughter | — | Virginia |
| 6 | Robert Kirby | 18 | Son | Laborer | Virginia |
| 7 | Virginia Kirby | 16 | Daughter | — | Virginia |
| 8 | James Kirby | 12 | Son | — | Virginia |
| 9 | David Kirby | 6 | Son | — | Virginia |
| 10 | Edwin Kirby | 24 | Son | Knitter | Virginia |
| 11 | Roberta Kirby | 18 | Daughter-in-law | Seamer | Virginia |
| 12 | Clarence Aker | 33 | Head | Laborer | Virginia |
| 13 | Emma F. Aker | 37 | Wife | — | Virginia |
| 14 | Jewel Aker | 3 | Daughter | — | Virginia |
| 15 | Clarence Aker | 1 | Son | — | Virginia |
| 16 | Charlotte B. Mc Donald | 82 | Head | — | Virginia |
| 17 | Hazel Jones | 36 | Daughter | — | Virginia |
| 18 | Malcolm X. Hudson | 49 | Head | Operator | Virginia |
| 19 | Clara Hudson | 46 | Wife | — | Virginia |
| 20 | Roland Hudson | 16 | Son | Laborer | Virginia |
| 21 | Malcolm Jr. Hudson | 14 | Son | — | Virginia |
| 22 | Winifred Hudson | 12 | Daughter | — | Virginia |
| 23 | Donald Hudson | 10 | Son | — | Virginia |
| 24 | Paul Hudson | 8 | Son | — | Virginia |
| 25 | Brooke E. Cagle | 30 | Head | Renter | Virginia |
| 26 | Henrietta Cagle | 35 | Wife | — | Virginia |
| 27 | Margie Cagle | 9 | Daughter | — | Virginia |
| 28 | Willie Cagle | 8 | Daughter | — | Virginia |
| 29 | Polly Cagle | 4 | Daughter | — | Virginia |
| 30 | Ben J. Burnett | 55 | Head | Operator | Virginia |
| 31 | Indie X. Burnett | 51 | Wife | — | Virginia |
| 32 | Howard Burnett | 25 | Son | Laborer | Virginia |
| 33 | Beula Burnett | 20 | Daughter | Seamer | Virginia |
| 34 | La Hue Burnett | 22 | Son | Knitter | Virginia |
| 35 | Sadie Bass | 5 | Grand niece | — | Virginia |
| 36 | Jesse James Gravely | 32 | Head | Motor Brakeman | Virginia |
| 37 | Gertie L. Gravely | 26 | Wife | — | Virginia |
| 38 | Georgia Gravely | 10 | Daughter | — | Virginia |
| 39 | Clyde Gravely | 8 | Son | — | Virginia |
| 40 | J. P. Gravely | 5 | Son | — | 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)