WM
Walter Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this Walter Mason across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed), with identified parents Mabel — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Mason |
| Given Name | Walter K. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Occupation | Service Station operator |
| Industry | owner of Business |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Service Station Operator |
| Township / Ward | Davenport City |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Walter Mason | Head | — | 30 | ~1910 |
| John Mason | Son | — | 1 | ~1939 |
| Lucile Mason | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Scott, Iowa
Son, age 10
Scott, Iowa · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Webster K |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Scott, Iowa
Other, age 20
Scott, Iowa · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Webster K. |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Clerk |
| Industry | Implement Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Scott-County, Iowa
Head, age 30
Scott-County, Iowa · implied b. ~1910 — 3 household members
| Surname | Mason |
| Given Name | Walter K. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Occupation | Service Station operator |
| Industry | owner of Business |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mabel Mason (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mabel Mason
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Mason
Head · 1940 · age 30 · b. ~1910 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Scott-County, Iowa
Open full size
1940 US Federal Census — Scott-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01203-00899)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Yensen | 46 | wife | — | Iowa |
| 42 | Richard Yensen | 20 | son | — | Iowa |
| 44 | Paul Armil | 35 | head | Salesman | Iowa |
| 45 | Marietta Armil | 34 | wife | — | Iowa |
| 46 | Harold E. Mills | 34 | head | Automotive Grinder & Wheel | Kansas |
| 47 | Morgan Mills | 28 | wife | — | Kansas |
| 48 | Lila Mae Mills | 11 | daughter | — | Illinois |
| 49 | Ardell Mills | 9 | daughter | — | Illinois |
| 50 | Casper J. Kasper | 30 | head | Draftsman | Wisconsin |
| 51 | Catherine Kasper | 27 | wife | — | Wisconsin |
| 52 | James Kasper | 0 | son | — | Iowa |
| 53 | John Belick | 30 | head | Stone Keeper | Iowa |
| 54 | Winifred Belick | 30 | wife | — | England |
| 55 | John S. Belick | 0 | son | — | Iowa |
| 56 | John A. Taylor | 62 | head | Traffic Man | Iowa |
| 57 | Laura Taylor | 56 | wife | — | Missouri |
| 58 | Lillian Jordan | 52 | nurse | Practical Nurse | Iowa |
| 59 | Walter K. Mason THIS PERSON | 30 | head | Service Station Operator | Iowa |
| 60 | Lucile Mason | 28 | wife | — | Iowa |
| 61 | John L. Mason | 1 | son | — | Iowa |
| 62 | William Thenhaus | 40 | head | Senior Tool Designer | Illinois |
| 63 | Florence Thenhaus | 37 | wife | — | Iowa |
| 64 | Donald C. Thenhaus | 15 | son | — | Iowa |
| 65 | H. Eugene Thenhaus | 12 | son | — | Iowa |
| 66 | Patricia J. Thenhaus | 7 | daughter | — | Iowa |
| 67 | Obal Holtzinger | 32 | head | Laborer | Oklahoma |
| 68 | Kathryne Holtzinger | 32 | wife | — | Iowa |
| 69 | Donnalu Holtzinger | 8 | daughter | — | Iowa |
| 70 | Ellen K. Holtzinger | 1 | daughter | — | Iowa |
| 71 | Mathias Keller | 89 | head | — | Germany |
| 72 | Amelia Keller | 86 | wife | — | Iowa |
| 73 | Minnie Keller | 53 | daughter | — | Iowa |
| 74 | Tenie Keller | 52 | daughter | — | Iowa |
| 75 | Leonard Schmitt | 44 | head | Printer | Iowa |
| 76 | Sarah Schmitt | 49 | wife | — | Iowa |
| 77 | William Swain | 73 | head | — | Virginia |
| 78 | Mary Swain | 69 | wife | — | Iowa |
| 79 | George Swain | 48 | son | Office Clerk | Iowa |
| 80 | Verle Swain | 39 | son | Instructor Of Cooking | Iowa |
Pedigree Summary
Walter
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)