MD
Mary Davidson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Coffey-County, Kansas
Our Model Tree links this Mary Davidson across the 1930 and 1940 US Censuses in Coffey-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Coffey-County, Kansas |
| Surname | Davidson |
| Given Name | Mary Belle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Hall Summit |
| 1935 Residence (County) | Coffey |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Hall Summit |
| Est. Birth Year | ~1925 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Darlene Davidson | Daughter | — | 5 | ~1935 |
| Mary Davidson | Daughter | — | 15 | ~1925 |
| Vera Mcclothlin | Daughter | — | 20 | ~1920 |
| Alice Davidson | Daughter | — | 6 | ~1934 |
| John Davidson | Head | — | 64 | ~1876 |
| Tom Davidson | Other | — | 74 | ~1866 |
| Gerald Mcclothlin | Other | — | 21 | ~1919 |
| Harold Davidson | Son | — | 14 | ~1926 |
| Howard Davidson | Son | — | 14 | ~1926 |
| Ralph Davidson | Son | — | 18 | ~1922 |
| Effie Davidson | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Coffey, Kansas
Daughter, age 5
Coffey, Kansas · implied b. ~1925 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Maybelle |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Coffey-County, Kansas
Daughter, age 15
Coffey-County, Kansas · implied b. ~1925 — 11 household members
| Surname | Davidson |
| Given Name | Mary Belle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Hall Summit |
| 1935 Residence (County) | Coffey |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Davidson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Davidson
Daughter · 1940 · age 15 · b. ~1925 · Kansas
★ You are viewing this record
Sibling
Vera Mcclothlin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Davidson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Davidson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Davidson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Davidson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Darlene Davidson
Sibling · 1940 · age 5
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 — Coffey-County, Kansas
Open full size
1940 US Federal Census — Coffey-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01225-00670)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Verne M. Ragsdale | 30 | Head | Civil Engineer | Kansas |
| 2 | Nina Ragsdale | 24 | Wife | — | Oklahoma |
| 3 | Loren Lee Ragsdale | 6 | Son | — | Kansas |
| 4 | Clifford L. Ragsdale | 1 | Son | — | Kansas |
| 5 | John H. Mcclothlin | 59 | Head | Labor | Indiana |
| 6 | Bessie C. Castle | 56 | Head | — | Kansas |
| 7 | Ethel Castle | 16 | Daughter | — | Kansas |
| 8 | Lawrence Castle | 14 | Son | — | Kansas |
| 9 | John R. Davidson | 64 | Head | Labor | Pennsylvania |
| 10 | Effie Davidson | 47 | Wife | — | Iowa |
| 11 | Ralph J. Davidson | 18 | Son | Labor | Kansas |
| 12 | Mary Belle Davidson THIS PERSON | 15 | Daughter | — | Kansas |
| 13 | Harold Davidson | 14 | Son | — | Kansas |
| 14 | Howard Davidson | 14 | Son | — | Kansas |
| 15 | Alice Davidson | 6 | Daughter | — | Kansas |
| 16 | Darlene Davidson | 5 | Daughter | — | Kansas |
| 17 | Gerald Mcclothlin | 21 | Son-in-law | Truck Driver | Kansas |
| 18 | Vera Mcclothlin | 20 | Daughter | — | Kansas |
| 19 | Tom Davidson | 74 | Brother | — | Pennsylvania |
| 20 | Fred Ireland | 53 | Head | — | Missouri |
| 21 | Anna Ireland | 58 | Wife | — | Missouri |
| 22 | Sarah Williams | 82 | Head | — | Illinois |
| 23 | Emma Paris | 62 | Hired | Nurse | Missouri |
| 24 | Franklin Brock | 77 | Head | — | Indiana |
| 25 | Lucendia Brock | 70 | Wife | — | Illinois |
| 26 | Walter W. Huston|Hustun | 46 | Head | Clerk | Kansas |
| 27 | Mattie T. Huston|Hustun | 30 | Wife | — | Kansas |
| 28 | Walter R. Huston|Hustun | 7 | Son | — | Missouri |
| 29 | Cornett Sellers | 43 | Head | Operator | Missouri |
| 30 | Nola Sellers | 40 | Wife | — | Kansas |
| 31 | Clarence Sellers | 19 | Son | Labor | Kansas |
| 32 | Tom Sellers | 16 | Son | Labor | Kansas |
| 33 | Ronald Sellers | 14 | Son | — | Kansas |
| 34 | Betty Sellers | 13 | Daughter | — | Kansas |
| 35 | Fred F. Ireland | 34 | Head | Operator | Missouri |
| 36 | Thelma Ireland | 24 | Wife | — | Kansas |
| 37 | Doris Louise Ireland | 2 | Daughter | — | Kansas |
| 38 | Nettie Jameson | 67 | Head | Telephone Operator | Virginia |
| 39 | Harold Doherty | 34 | Head | Truck Driver | Kansas |
| 40 | Onean Doherty | 31 | Wife | — | Kansas |
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)