WM
Walter Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mahaska-County, Iowa
Our Model Tree links this Walter Mason across the 1930 and 1940 US Censuses in Mahaska-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mahaska-County, Iowa |
| Surname | Mason |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Mahaska |
| Additional Details | |
| Highest Grade | G 6 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Pleasant Grove |
| Est. Birth Year | ~1928 |
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 Walter | Age | Birth yr |
|---|---|---|---|---|
| Paul Mason | Son | — | 19 | ~1921 |
| Bertha Mason | Spouse | — | 49 | ~1891 |
| Edith Mason | Daughter | — | 7 | ~1933 |
| Nancy Mason | Daughter | — | 6 | ~1934 |
| Oliver Mason | Head | — | 63 | ~1877 |
| Babe Mason | Son | — | 10 | ~1930 |
| Wilma Mason | Daughter | — | 14 | ~1926 |
| Walter Mason | Son | — | 12 | ~1928 |
| Lualene Mason | Daughter | — | 16 | ~1924 |
| Panda Mason | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Henry, Iowa
Son, age 2
Henry, Iowa · implied b. ~1928 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Wayne L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Mahaska-County, Iowa
Son, age 12
Mahaska-County, Iowa · implied b. ~1928 — 10 household members
| Surname | Mason |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Mahaska |
| Highest Grade | G 6 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Walter Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Walter Mason
Son · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Wilma Mason
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lualene Mason
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Mason
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Babe Mason
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Panda Mason
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Mason
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mason
Sibling · 1940 · age 19
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 — Mahaska-County, Iowa
Open full size
1940 US Federal Census — Mahaska-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01180-00578)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Betty Middleton | 11 | Daughter | — | Iowa |
| 42 | Barbara Middleton | 10 | Daughter | — | Iowa |
| 43 | Elmer Chandler | 34 | Head | Farmer | Iowa |
| 44 | Olive Chandler | 32 | Wife | — | Iowa |
| 45 | Dorothy Chandler | 7 | Daughter | — | Iowa |
| 46 | Harry Chandler | 2 | Son | — | Iowa |
| 47 | Charles Chandler | 57 | Head | Farmer | Iowa |
| 48 | Bertha Chandler | 52 | Wife | — | Iowa |
| 49 | Mary Jane Chandler | 9 | Daughter | — | Iowa |
| 50 | Willie Chandler | 50 | Head | Farmer | Iowa |
| 51 | Dora Chandler | 47 | Wife | — | Iowa |
| 52 | Everett Chandler | 25 | Son | Teacher | Iowa |
| 53 | Kenneth Chandler | 2 | Son | — | Iowa |
| 54 | Frank Mccord | 65 | Head | Farmer | Iowa |
| 55 | Oma Mccord | 61 | Wife | — | Iowa |
| 56 | George Loving | 44 | Head | Shop Worker (Class) | Missouri |
| 57 | Ruth Loving | 36 | Wife | — | Iowa |
| 58 | Ruth Loving | 18 | Daughter | — | Iowa |
| 59 | James Loving | 16 | Son | — | Iowa |
| 60 | Clarence Loving | 14 | Daughter | — | Iowa |
| 61 | Shirley Loving | 3 | Daughter | — | Iowa |
| 62 | Oliver Mason | 63 | Head | Farmer | Iowa |
| 63 | Bertha Mason | 49 | Wife | — | Iowa |
| 64 | Paul Mason | 19 | Son | Farmer | Iowa |
| 65 | Panda Mason | 17 | Daughter | — | Iowa |
| 66 | Lualene Mason | 16 | Daughter | — | Iowa |
| 67 | Wilma Mason | 14 | Daughter | — | Iowa |
| 68 | Walter Mason THIS PERSON | 12 | Son | — | Iowa |
| 69 | Babe Mason | 10 | Son | — | Iowa |
| 70 | Edith Mason | 7 | Daughter | — | Iowa |
| 71 | Nancy Darlene Mason | 6 | Daughter | — | Iowa |
| 72 | John Walter Smith | 50 | Head | Farmer | Iowa |
| 73 | Bessie Smith | 45 | Wife | — | Iowa |
| 74 | Mildred Smith | 11 | Daughter | — | Iowa |
| 75 | Richard Smith | 7 | Son | — | Iowa |
| 76 | George Mccartney | 66 | Head | — | Iowa |
| 77 | Ernest Ferguson | 40 | Head | Farmer | Iowa |
| 78 | Ila Ferguson | 27 | Wife | — | Iowa |
| 79 | Darrell Ferguson | 8 | Son | — | Iowa |
| 80 | Jerry Ferguson | 3 | Son | — | Iowa |
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)