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John Kirby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Robertson-County, Tennessee
Our Model Tree links this John Kirby across the 1930 and 1940 US Censuses in Robertson-County, Tennessee (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Male
Son
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Robertson-County, Tennessee |
| Surname | Kirby |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Robertson |
| Additional Details | |
| Occupation | Helper |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 46 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Helper |
| Township / Ward | 11Th Civil District |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Kirby | Son | — | 19 | ~1921 |
| Hellen Kirby | Daughter | — | 16 | ~1924 |
| Stella Kirby | Daughter | — | 22 | ~1918 |
| Cecil Kirby | Son | — | 24 | ~1916 |
| Leona Kirby | Spouse | — | 50 | ~1890 |
| Mary Kirby | Daughter | — | 12 | ~1928 |
| O Kirby | Head | — | 50 | ~1890 |
Census Appearances
1930
Robertson, Tennessee
Son, age 9
Robertson, Tennessee · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Robertson-County, Tennessee
Son, age 19
Robertson-County, Tennessee · implied b. ~1921 — 7 household members
| Surname | Kirby |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Robertson |
| Occupation | Helper |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 46 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 19 · b. ~1921 · Tennessee
★ You are viewing this record
Sibling
Stella Kirby
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Kirby
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hellen Kirby
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kirby
Sibling · 1940 · age 12
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 — Robertson-County, Tennessee
Open full size
1940 US Federal Census — Robertson-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03930-00551)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joe Ivy | 4 | Son | — | Tennessee |
| 42 | Clyde Ivy | 3 | Son | — | Tennessee |
| 43 | Woodrow Gregory | 20 | Lodger | Farmer | Tennessee |
| 44 | Raymond Simmons | 35 | Head | Farmer | Tennessee |
| 45 | Katherine Simmons | 25 | Wife | — | Tennessee |
| 46 | Shirley Simmons | 8 | Daughter | — | Tennessee |
| 47 | J. W. Baird | 56 | Head | Farmer | Kentucky |
| 48 | Hannie Baird | 45 | Wife | — | Tennessee |
| 49 | Anna Laura Baird | 18 | Daughter | — | Tennessee |
| 50 | James Baird | 13 | Son | — | Tennessee |
| 51 | J. S. Widick | 57 | Head | Farmer | Tennessee |
| 52 | Willie Mae Widick | 48 | Wife | — | Tennessee |
| 53 | Mary Widick | 17 | Daughter | — | Tennessee |
| 54 | Leonard Widick | 14 | Son | — | Tennessee |
| 55 | Davis W. Covington | 32 | Head | Labour | Tennessee |
| 56 | Mabel Covington | 32 | Wife | — | Tennessee |
| 57 | Louise Covington | 14 | Daughter | — | Tennessee |
| 58 | Wanda Lee Covington | 3 | Daughter | — | Tennessee |
| 59 | Wayne Covington | 0 | Son | — | Tennessee |
| 60 | A. B. Covington | 65 | Head | Farmer | Tennessee |
| 61 | Ida Bell Covington | 57 | Wife | — | Tennessee |
| 62 | O. H. Kirby | 50 | Head | Farmer | Tennessee |
| 63 | Leona Kirby | 50 | Wife | — | Tennessee |
| 64 | Cecil Kirby | 24 | Son | Helper | Tennessee |
| 65 | Stella Kirby | 22 | Daughter | — | Tennessee |
| 66 | John Kirby THIS PERSON | 19 | Son | Helper | Tennessee |
| 67 | Hellen Kirby | 16 | Daughter | — | Tennessee |
| 68 | Mary Kirby | 12 | Daughter | — | Tennessee |
| 69 | M. E. Widick | 70 | Head | Farmer | Tennessee |
| 70 | Mrs. M. E. Widick | 64 | Wife | — | Tennessee |
| 71 | Hardie Widick | 24 | Son | Farmer | Tennessee |
| 72 | Susie Widick | 22 | Daughter | — | Tennessee |
| 73 | Richard Gordon | 24 | Head | Farmer | Tennessee |
| 74 | Flossie Gordon | 22 | Wife | — | Tennessee |
| 75 | Sally Mae Gordon | 4 | Daughter | — | Tennessee |
| 76 | Arshall Gordon | 0 | Son | — | Tennessee |
| 77 | Vernon W. Robertson | 46 | Head | Farmer | Tennessee |
| 78 | Stella Mae Robertson | 48 | Wife | — | Tennessee |
| 79 | Verona Mai Robertson | 20 | Daughter | — | Tennessee |
| 80 | Sara Ellen Robertson | 18 | Daughter | — | Tennessee |
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)