WM
William Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dunklin-County, Missouri
Our Model Tree links this William Mason across the 1920, 1930 and 1940 US Censuses in Dunklin-County, Missouri (XGBoost, ~Confirmed) — first a head (b.~1899), then head of a 13-person household.
Age 41
b. ~1899
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dunklin-County, Missouri |
| Surname | Mason |
| Given Name | William B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Clay Township |
| 1935 Residence (County) | Dunklin |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 400 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Farmer |
| Township / Ward | Clay Township |
| Est. Birth Year | ~1899 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Ruby Mason | Daughter | — | 7 | ~1933 |
| Tessie Mason | Daughter | — | 17 | ~1923 |
| Irene Mason | Daughter | — | 11 | ~1929 |
| Clara Mason | Daughter | — | 20 | ~1920 |
| Dorothy Mason | Daughter | — | 19 | ~1921 |
| Pearl Mason | Daughter | — | 9 | ~1931 |
| Geraldine Mason | Daughter | — | 15 | ~1925 |
| Martha Mason | Daughter | — | 1 | ~1939 |
| William Mason | Head | — | 41 | ~1899 |
| Doyle Mason | Son | — | 6 | ~1934 |
| Roy Mason | Son | — | 13 | ~1927 |
| Donald Mason | Son | — | 4 | ~1936 |
| Chloe Mason | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Dunklin, Missouri
Head, age 22
Dunklin, Missouri · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | William B. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | farmer |
| Industry | general |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Free/Mortgaged | R |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Dunklin, Missouri
Head, age 33
Dunklin, Missouri · implied b. ~1897 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 21 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Dunklin-County, Missouri
Head, age 41
Dunklin-County, Missouri · implied b. ~1899 — 13 household members
| Surname | Mason |
| Given Name | William B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Clay Township |
| 1935 Residence (County) | Dunklin |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 400 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 William Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mason
Head · 1940 · age 41 · b. ~1899 · Missouri
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Dunklin-County, Missouri
Open full size
1940 US Federal Census — Dunklin-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02104-00276)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | May | 44 | Wife | Housewife | Illinois |
| 2 | Eugene | 19 | Son | Labor | Arkansas |
| 3 | Thelma | 13 | Daughter | Student | Arkansas |
| 4 | Billy | 10 | Son | Student | Arkansas |
| 5 | Pelano | 6 | Son | — | Missouri |
| 6 | James Couch | 21 | Lodger | Labor | Missouri |
| 7 | Harry Shepherd | 61 | Head | Farmer | Ohio |
| 8 | Ethel Shepherd | 51 | Wife | Housewife | Missouri |
| 9 | Mabel Tinnin | 26 | Daughter | Housework | Missouri |
| 10 | Tolly Nail | 42 | Head | Labor | Tennessee |
| 11 | Nild Nail | 37 | Wife | Housewife | Tennessee |
| 12 | Lala M. Nail | 17 | Daughter | Housework | Tennessee |
| 13 | Margret Nail | 14 | Daughter | Student | Tennessee |
| 14 | John F. Nail | 10 | Son | — | Tennessee |
| 15 | Phyllis Nail | 5 | Daughter | — | Missouri |
| 16 | Leon Nail | 3 | Son | — | Missouri |
| 17 | Jimmie W. Nail | None | Son | — | Missouri |
| 18 | Claude E. Tinnin | 25 | Head | Labor | Missouri |
| 19 | Mildred Tinnin | 21 | Wife | Housewife | Missouri |
| 20 | Larry Tinnin | 4 | Son | — | Missouri |
| 21 | Pat Tinnin | 3 | Son | — | Missouri |
| 22 | Arthur W. Tinnin | 27 | Head | Labor Farm | Missouri |
| 23 | Helen Tinnin | 21 | Wife | Housewife | Missouri |
| 24 | Jerry W. Tinnin | 1 | Son | — | Missouri |
| 25 | William B. Mason THIS PERSON | 41 | Head | Farmer | Missouri |
| 26 | Chloe E. Mason | 40 | Wife | Housewife | Missouri |
| 27 | Clara Mason | 20 | Daughter | Housework | Missouri |
| 28 | Dorothy Mason | 19 | Daughter | Student | Missouri |
| 29 | Tessie Mason | 17 | Daughter | Student | Missouri |
| 30 | Geraldine Mason | 15 | Daughter | Student | Missouri |
| 31 | Roy Mason | 13 | Son | Student | Missouri |
| 32 | Irene Mason | 11 | Daughter | — | Missouri |
| 33 | Pearl Mason | 9 | Daughter | — | Missouri |
| 34 | Ruby Mason | 7 | Daughter | — | Missouri |
| 35 | Doyle Mason | 6 | Son | Deaf | Missouri |
| 36 | Donald Mason | 4 | Son | — | Missouri |
| 37 | Martha G. Mason | 1 | Daughter | — | Missouri |
| 38 | Leonard E. Tinnin | 56 | Head | Farmer | Missouri |
| 39 | Willie Tinnin | 54 | Wife | Housewife | Texas |
| 40 | Joseph E. Tinnin | 18 | Son | Student | Missouri |
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)