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Helen Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adams-County, Illinois
Our Model Tree links this Helen Mason across the 1930 and 1940 US Censuses in Adams-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 10-person household.
Age 24
b. ~1916
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Adams-County, Illinois |
| Surname | Mason |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Quincy City |
| 1935 Residence (County) | Adams |
| Additional Details | |
| Occupation | Maid |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Maid |
| Township / Ward | Quincy City |
| Est. Birth Year | ~1916 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Earl Mason | Son | — | 17 | ~1923 |
| Barbara Mason | Daughter | — | 5 | ~1935 |
| Estella Mason | Daughter | — | 17 | ~1923 |
| Charles Mason | Son | — | 23 | ~1917 |
| Mary Mason | Daughter | — | 15 | ~1925 |
| John Young | Other | — | 73 | ~1867 |
| Estella Mason | Spouse | — | 44 | ~1896 |
| Edw Mason | Head | — | 49 | ~1891 |
| Helen Mason | Daughter | — | 24 | ~1916 |
| John Mason | Son | — | 21 | ~1919 |
Census Appearances
1930
Adams, Illinois
Daughter, age 14
Adams, Illinois · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Helen G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Adams-County, Illinois
Daughter, age 24
Adams-County, Illinois · implied b. ~1916 — 10 household members
| Surname | Mason |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Quincy City |
| 1935 Residence (County) | Adams |
| Occupation | Maid |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Helen Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Mason
Daughter · 1940 · age 24 · b. ~1916 · Illinois
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Sibling
Earl Mason
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mason
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Estella Mason
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mason
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mason
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Mason
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 — Adams-County, Illinois
Open full size
1940 US Federal Census — Adams-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00757-00174)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph H. Derwelp | 44 | Head | Auto Mechanic | Illinois |
| 2 | Mathilda K. Derwelp | 43 | Wife | — | Illinois |
| 3 | Eugene Derwelp | 23 | Son | Truck Driver | Illinois |
| 4 | Lillian Derwelp | 21 | Daughter | — | Illinois |
| 5 | Russell Derwelp | 16 | Son | — | Illinois |
| 6 | Edw. L. Mason | 49 | Head | Truck Driver | Missouri |
| 7 | Estella Mason | 44 | Wife | — | Illinois |
| 8 | Helen Mason THIS PERSON | 24 | Daughter | Maid | Kansas |
| 9 | Charles Mason | 23 | Son | Check Clerk | Illinois |
| 10 | John Mason | 21 | Son | — | Illinois |
| 11 | Earl Mason | 17 | Son | — | Illinois |
| 12 | Estella Mason | 17 | Daughter | — | Illinois |
| 13 | Mary Lou Mason | 15 | Daughter | — | Illinois |
| 14 | Barbara Mason | 5 | Daughter | — | Illinois |
| 15 | John T. Young | 73 | Father | — | Illinois |
| 16 | Frank Seals | 88 | Head | — | Illinois |
| 17 | Adeline Seals | 81 | Wife | — | Illinois |
| 18 | Roy Kron | 24 | Head | Welder | Louisiana |
| 19 | Virginia Kron | 25 | Wife | — | Illinois |
| 20 | Jacqulyn Kron | 5 | Daughter | — | Illinois |
| 21 | Roy Kron | 3 | Son | — | Illinois |
| 22 | Selma Kron | 45 | Mother | Stenographer | Illinois |
| 23 | Walter Tapman | 30 | Head | Clerk | Missouri |
| 24 | Anna Tapman | 30 | Wife | Machine Operator | Illinois |
| 25 | Dorothy Brocksmith | 12 | Step Daughter | — | Illinois |
| 26 | Alice Tapman | 57 | Mother | — | Missouri |
| 27 | Louis H. Bryan | 36 | Head | Truck Driver | Missouri |
| 28 | Julia Bryan | 36 | Wife | — | Missouri |
| 29 | Louis W. Bryan | 2 | Son | — | Illinois |
| 30 | Ronald L. Bryan | 1 | Son | — | Illinois |
| 31 | Carl L. Hand | 39 | Head | Janitor | Illinois |
| 32 | Walter Kauffman | 50 | Head | Bus Driver | Illinois |
| 33 | Frank Kauffman | 52 | Brother | Laborer | Illinois |
| 34 | Glenn Brown | 42 | Head | Truck Driver | Iowa |
| 35 | Bertha Brown | 43 | Wife | — | Illinois |
| 36 | Lester V. Veach | 28 | Step Son | — | Illinois |
| 37 | Albert Jr. Veach | 14 | Step Son | — | Illinois |
| 38 | Robert Yohn | 41 | Head | Mach. Operator | Missouri |
| 39 | Ethel Yohn | 40 | Wife | — | Illinois |
| 40 | Robert H. Yohn | 13 | Son | — | Illinois |
Related Census Records
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)