Name and years of b and d from ground reading, below is SD deaths on Ancestry
she married Willard Ducolon March 18,1918 in Pennington County.

Stella Elizabeth Tenny
South Dakota Birth record
Birth Date: 26 Feb 1899
Gender: Female
County: Pennington
Father's Name: William Fred Tenny
Mother's Name: Alice May Noble
File Date: 27 Jun 1942

1900 census
Stella Tenny
Age: 1
Birth Date: Feb 1899
Birthplace: South Dakota
Home in 1900: Forbes, Pennington, South Dakota
Race: White
Gender: Female
Relation to Head of House: Daughter
Marital Status: Single
Father's Name: Fred W Tenny
Father's Birthplace: Michigan
Mother's Name: Alice Tenny
Mother's Birthplace: Michigan
Household Members:
Name Age
Fred W Tenny 37
Alice Tenny 37
Sana Tenny 15
Maude Tenny 13
Stella Tenny 1

Ist marriage
Name: Willard F Ducolon
Gender: Male
Age: 34
Birth Year: abt 1884
Residence Post Office: Keystone
Residence Place: Pennington
Marriage Date: 18 Mar 1918
Marriage Place: Pennington, South Dakota, USA
Certificate: 63781
Registration Number: 222
Spouse: Stella Tenney

1930 census
Willard F Ducolon
Gender: Male
Birth Year: abt 1885
Birthplace: New York
Race: White
Home in 1930: South Bend, St Joseph, Indiana
Marital Status: Married
Relation to Head of House: HeadSpouse's Name: Stella W Ducolon
Father's Birthplace: United States
Mother's Birthplace: New York
Occupation:
Household Members:
Name Age
Willard F Ducolon 45
Stella W Ducolon 31
Maxine A Ducolon 9

1940 census
Stella Zasdil
Age: 41
Estimated Birth Year: abt 1899
Gender: Female
Race: White
Birthplace: South Dakota
Marital Status: Married
Relation to Head of House: Wife
Home in 1940: Township 2 S Range 6, Pennington, South Dakota
Inferred Residence in 1935: Rural
Residence in 1935: Rural
Sheet Number: 8B
Attended School or College: No
Highest Grade Completed: High School, 1st year
Household Members:
Name Age
Jack Zasadil 39
Steller Zasadil 41
William Ducolon 10