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Helen Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bowman-County, North Dakota
Our Model Tree links this Helen Mason across the 1930 and 1940 US Censuses in Bowman-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 7-person household.
Age 43
b. ~1897
Female
Spouse
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bowman-County, North Dakota |
| Surname | Mason |
| Given Name | Helen S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Township 131 Range 106-107 Sunny Slope Township |
| 1935 Residence (County) | Bowman |
| Additional Details | |
| Industry | H |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Township 131 Range 106107 Sunny Slope Township |
| Est. Birth Year | ~1897 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Arlene Mason | Daughter | — | 5 | ~1935 |
| Jackie Mason | Son | — | 6 | ~1934 |
| Helen Mason | Spouse | — | 43 | ~1897 |
| Theodore Mason | Son | — | 17 | ~1923 |
| Robert Mason | Son | — | 19 | ~1921 |
| William Mason | Son | — | 14 | ~1926 |
| Charles Mason | Head | — | 49 | ~1891 |
Census Appearances
1930
Bowman, North …
Spouse, age 31
Bowman, North Dakota · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Helen G |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 18 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Bowman-County, North …
Spouse, age 43
Bowman-County, North Dakota · implied b. ~1897 — 7 household members
| Surname | Mason |
| Given Name | Helen S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Township 131 Range 106-107 Sunny Slope Township |
| 1935 Residence (County) | Bowman |
| Industry | H |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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
Spouse · 1940 · age 43 · b. ~1897 · North Dakota
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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 — Bowman-County, North Dakota
Open full size
1940 US Federal Census — Bowman-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02994-00624)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Claude R Snearly | 39 | Head | Farmer | Montana |
| 2 | Gladys B Snearly | 32 | Wife | — | Texas |
| 3 | Alta A Snearly | 6 | Daughter | — | Montana |
| 4 | Mary L Snearly | 2 | Daughter | — | South Dakota |
| 5 | Charles J Clark | 41 | Head | Farmer | South Dakota |
| 6 | Dorothy J Clark | 31 | Wife | — | North Dakota |
| 7 | Lucille M Clark | 12 | Daughter | — | North Dakota |
| 8 | Charles G Clark | 11 | Son | — | North Dakota |
| 9 | Alice J Clark | 9 | Daughter | — | North Dakota |
| 10 | Shirley J Clark | 2 | Son | — | North Dakota |
| 11 | John H Little | 48 | Head | Farmer | Illinois |
| 12 | Sam C Knobf | 58 | Head | Farmer | Wisconsin |
| 13 | Bess E Knobf | 52 | Wife | — | Iowa |
| 14 | Carl A Olson | 54 | Head | Farmer | Iowa |
| 15 | Ellen Olson | 54 | Wife | — | North Dakota |
| 16 | Thomas P Olson | 45 | Brother | — | Iowa |
| 17 | Carl A Irish | 43 | Head | Farmer | Minnesota |
| 18 | Jennie M Irish | 40 | Wife | — | Minnesota |
| 19 | Charles Bock | 54 | Head | Farmer | Wisconsin |
| 20 | Mae R Bock | 42 | Wife | — | Minnesota |
| 21 | Doris A Bock | 15 | Daughter | — | North Dakota |
| 22 | Elmer E Svedlund | 24 | Son-in-law | Laborer | North Dakota |
| 23 | Jennie M Svedlund | 22 | Daughter | — | North Dakota |
| 24 | Ida M Svedlund | 0 | Daughter | — | Montana |
| 25 | Charles F Mason | 49 | Head | Farmer | Kansas |
| 26 | Helen S Mason THIS PERSON | 43 | Wife | — | Wisconsin |
| 27 | Robert F Mason | 19 | Son | Farm Laborer | North Dakota |
| 28 | Theodore M Mason | 17 | Son | — | North Dakota |
| 29 | William M Mason | 14 | Son | — | North Dakota |
| 30 | Jackie E Mason | 6 | Son | — | North Dakota |
| 31 | Arlene G Mason | 5 | Daughter | — | North Dakota |
| 32 | August H Kulas | 40 | Head | Farmer | Wisconsin |
| 33 | Mabel Kulas | 36 | Wife | — | Wisconsin |
| 34 | Evelyn Kulas | 12 | Daughter | — | North Dakota |
| 35 | Deandra M Kulas | 2 | Daughter | — | North Dakota |
| 36 | Alvin H Graham | 35 | Head | Farmer | South Dakota |
| 37 | Joy O Graham | 27 | Wife | — | North Dakota |
| 38 | Betty J Graham | 10 | Daughter | — | North Dakota |
| 39 | Alice L Graham | 8 | Daughter | — | North Dakota |
| 40 | Jayne S Graham | 6 | Daughter | — | North Dakota |
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)