Extract from the 1900 Census:
Name: Helen E Parks
Age at last birthday: 7
Date of birth: Sep 1892
Birthplace: Minnesota
Race: white
Sex: female
Relationship to head-of-house: daughter
Home in 1900: Duluth Ward 5, Saint Louis, Minnesota
Address: 324 West 2nd Street
Marital status: single
Able to read, write and speak English: yes
Father's birthplace: Wisconsin
Mother's birthplace: New York
Occupation: attending school
Siblings living at home: none
Census place: Duluth Ward 5, Saint Louis, Minnesota; Roll: T623 790; Page: 13B; Enumeration District: 272
Date: 12 Jun 1900

Extract from the 1910 Census:
Name: Helen P Williams
Age in 1910: 17
Estimated birth year: 1893
Birthplace: Minnesota
Race: white
Sex: female
Relationship to head of family: daughter
Home in 1910: Duluth Ward 2, Saint Louis, Minnesota
Address: 931 East 4th Street
Marital status: single
Able to speak English: yes
Able to read and write: yes
Father's birthplace: Wales
Mother's birthplace: New York
Occupation: none
Siblings living at home: none
Census place: Duluth Ward 2, Saint Louis, Minnesota; Roll: T624_725; Page: 2A; Enumeration District: 158; Image: 115
Date: 15 Apr 1910

Extract from the 1920 Census:
Name: Helen W Tennant
Age: 27
Estimated birth year: 1893
Birthplace: Minnesota
Race: white
Sex: female
Relationship to head of house: wife
Home in 1920: Duluth, Saint Louis, Minnesota
Address: 2327 East 1st Street
Marital status: married
Able to speak English: yes
Able to read and write: yes
Father's birthplace: New York [sic]
Mother's birthplace: Pennsylvania [sic]
Occupation: none
Census place: Duluth, Saint Louis, Minnesota; Roll: T625_858; Page: 10B; Enumeration District: 95; Image: 148
Date: 10 Jan 1920

Extract from the 1930 Census:
Name: Helen Tennant
Age: 37
Estimated birth year: 1893
Birthplace: Minnesota
Race: white
Sex: female
Relation to head-of-house: wife
Home in 1930: Duluth, Saint Louis, Minnesota
Address: 2221 Second Street
Marital status: married
Age at first marriage: 23
Education: able to speak English
Education: able to read and write
Fathers' birthplace: Wisconsin
Mothers' birthplace: New York
Occupation: none
Census place: Duluth, Saint Louis, Minnesota; Roll: 1126; Page: ; Enumeration District: 43; Image: 231.0
Date: 3 Apr 1930

Extract from the 1940 Census:
Name: Helen Tennant
Age: 47
Estimated birth year: 1893
Birthplace: Minnesota
Race: white
Sex: female
Relation to head-of-house: wife
Home in 1940: Duluth, Saint Louis, Minnesota
Address: 221 23rd Avenue East
Marital status: married
Highest grade of school completed: 8
Living on farm: no
City of residence in 1935: Duluth, Saint Louis, Minnesota
Resident on farm in 1935: no
Occupation: housework
Has other income of more than $50: yes
Census place: Duluth, Saint Louis, Minnesota; Roll: T627_1972; Page: 4A; Enumeration District: 88-35
Date: 5 Apr 1940

Extract from the 1950 Census:
Name: Helen W Tennant
Age: 57
Estimated birth year: 1893
Birthplace: Minnesota
Race: white
Sex: female
Relation to head-of-house: wife
Home in 1950: Duluth, Saint Louis, Minnesota
Address: 221 23rd Avenue East
Marital status: married
Living on farm: no
Occupation: keeping house
Census place: Duluth, Saint Louis, Minnesota
Date: 4 Apr 1950

She may have been adopted by John G Williams after he married her mother. She lived to age 75. She lived alone at the family home at 221 North 23rd Avenue East in Duluth after she and her husband separated in the 1940s. She loved to read, but toward the end of her life her vision began to fail.

Obituary from the "Duluth News-Tribune" of Duluth, Minnesota dated Saturday 30 Nov 1968:
Mrs. Helen W. Tennant, 76, of 221 N. 23rd Ave. E., daughter of the late Mr. and Mrs. John G. Williams, died Friday in a Duluth hospital. She was born in Duluth and was a graduate of St. Mary's Hall. She is survived by her husband, Robert H.; two daughters, Mrs. Robert (Betty) Rhode and Mrs. Richard (Jean) Spicer, both of Duluth; one son, Robert H. Jr., Owatonna, 12 grandchildren and one great-grandchild.