MK
Mary Knox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Gibson-County, Tennessee
Our Model Tree links this Mary Knox across the 1930 and 1940 US Censuses in Gibson-County, Tennessee (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 6-person household.
Age 18
b. ~1922
Female
Daughter
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Gibson-County, Tennessee |
| Surname | Knox |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Gibson |
| Additional Details | |
| Occupation | Farm Labor |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 20 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Farm Laborer |
| Township / Ward | 14Th Civil District |
| Est. Birth Year | ~1922 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jc Knox | Son | — | 21 | ~1919 |
| Elaine Knox | Daughter | — | 15 | ~1925 |
| Evelyn Knox | Spouse | — | 45 | ~1895 |
| John Knox | Head | — | 47 | ~1893 |
| David Knox | Son | — | 9 | ~1931 |
| Mary Knox | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Gibson, Tennessee
Daughter, age 9
Gibson, Tennessee · implied b. ~1921 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knox |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| 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
Gibson-County, Tennessee
Daughter, age 18
Gibson-County, Tennessee · implied b. ~1922 — 6 household members
| Surname | Knox |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Gibson |
| Occupation | Farm Labor |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 20 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Mary Knox across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Knox
Daughter · 1940 · age 18 · b. ~1922 · Tennessee
★ You are viewing this record
Sibling
David Knox
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jc Knox
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elaine Knox
Sibling · 1940 · age 15
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 — Gibson-County, Tennessee
Open full size
1940 US Federal Census — Gibson-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03893-00250)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Luther L Gordon | 8 | Son | — | Tennessee |
| 42 | Bobby P Gordon | 7 | Son | — | Tennessee |
| 43 | William M Gordon | 3 | Son | — | Tennessee |
| 44 | Gerald P Arnold | 26 | Son-in-law | Farm Labor | Tennessee |
| 45 | Mildred Arnold | 17 | Daughter | 0 | Tennessee |
| 46 | Jacquelyn Patricia Arnold | 0 | Grand-daughter | 0 | Tennessee |
| 47 | Clyde Sharpe | 27 | Head | Farm Labor | Tennessee |
| 48 | Maude Sharpe | 27 | Wife | 0 | Tennessee |
| 49 | Martha E Sharpe | 3 | Daughter | 0 | Tennessee |
| 50 | Opha F Swindell | 55 | Head | 0 | Tennessee |
| 51 | Mary E Swindell | 45 | Wife | 0 | Tennessee |
| 52 | Robert A Crocker | 40 | Head | Road Worker | Tennessee |
| 53 | Bonnie M Crocker | 41 | Wife | 0 | Tennessee |
| 54 | Maurine Crocker | 13 | Daughter | Farm Labor | Tennessee |
| 55 | Jim D Terry | 53 | Head | Farm Labor | Tennessee |
| 56 | Minus S Terry | 42 | Wife | 0 | Tennessee |
| 57 | Leon A Terry | 19 | Son | Laborer | Tennessee |
| 58 | John D Young | 65 | Head | Farm Labor | Tennessee |
| 59 | Willard Onebolt | 21 | Hired Hand | Farm Labor | Tennessee |
| 60 | Laverne Onebolt | 18 | Servant | Servant | Tennessee |
| 61 | Willie T Taylor | 50 | Head | Farm Labor | Tennessee |
| 62 | Opal O Taylor | 41 | Wife | 0 | Tennessee |
| 63 | Mildred Taylor | 18 | Daughter | Farm Labor | Tennessee |
| 64 | J.W. Taylor | 17 | Son | Farm Labor | Tennessee |
| 65 | Leon Taylor | 15 | Son | 0 | Tennessee |
| 66 | Dan Taylor | 6 | Son | — | Tennessee |
| 67 | Bernie S Horton | 30 | Head | Farm Labor | Tennessee |
| 68 | Dorothy Horton | 28 | Wife | 0 | Tennessee |
| 69 | Joyce Ann Horton | 4 | Daughter | 0 | Tennessee |
| 70 | Ervin A Williams | 45 | Head | Farm Labor | Tennessee |
| 71 | Alice S Williams | 40 | Wife | 0 | Tennessee |
| 72 | Mary Helen Williams | 14 | Daughter | 0 | Tennessee |
| 73 | Dolly F Williams | 11 | Daughter | — | Tennessee |
| 74 | Freeman Steward | 23 | Hired Hand | Farm Labor | Tennessee |
| 75 | John H Knox | 47 | Head | Farm Labor | Tennessee |
| 76 | Evelyn Knox | 45 | Wife | 0 | Tennessee |
| 77 | J.C. Knox | 21 | Son | Farm Labor | Tennessee |
| 78 | Mary Knox THIS PERSON | 18 | Daughter | Farm Labor | Tennessee |
| 79 | Elaine Knox | 15 | Daughter | 0 | Tennessee |
| 80 | David Lee Knox | 9 | Son | — | 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)