Ethel was Married three times she was married to William George Costello but marriage records reveal a marriage to a Alfred Cuntoe and a Harry Brunholz as well, see marriage indexes below.

Ethel Goldsworthy in the 1920 United States Federal Census
Name: Ethel Goldsworthy [Ethel Goldeworthing]
Age: 10
Birth Year: abt 1910
Birthplace: Montana [Michigan]
Home in 1920: Schoolcraft, Houghton, Michigan
Race: White
Gender: Female
Relation to Head of House: Niece
Marital Status: Single
Father's Birthplace: Michigan
Mother's Birthplace: Michigan
Household Members:
Name Age
Adaline Paull
Myrta Paull 22
Frederic Paull 19
Ethel Goldsworthy 10

Ohio, Marriages, 1800-1958
Name: Alfred Curnoe
Birthplace: Pontiac, Michigan
Spouse's Name: Ethel Goldsworthy
Spouse's Birthplace: Butte, Montana
Event Date: 09 June 1928
Event Place: Bowling Green, Wood, Ohio
Father's Name: Frederick Curnoe
Mother's Name: Mary Hupp
Spouse's Father's Name: Paul Goldsworthy
Spouse's Mother's Name: Ellen Maynard
Marital Status: Single
Spouse's Marital Status: Single
Indexing Project (Batch) Number: M86909-6
System Origin: Ohio-VR
GS Film number: 409710
Reference ID: 2:3Q31NL7

Ethel C Costello in the California, Marriage Index, 1949-1959
Name: Ethel C Costello
Gender: Female
Estimated birth year: abt 1909
Age: 40
Marriage Date: 4 Nov 1949
Marriage Place: Los Angeles, California, USA
Spouse: Harry Brunholz
Spouse Age: 57

Ethel C Goldsworthy in the California, Marriage Index, 1949-1959
Name: Ethel C Goldsworthy
Gender: Female
Estimated birth year: abt 1909
Age: 40
Marriage Date: 4 Nov 1949
Marriage Place: Los Angeles, California, USA
Spouse: Harry Brunholz
Spouse Age: 57

Ethel C Costello in the California, Death Index, 1940-1997
Name: Ethel C Costello [Ethel C Goldsworth]
Gender: Female
Birth Date: 13 Aug 1909
Birth Place: Montana
Death Date: 27 May 1992
Death Place: Orange
Mother's Maiden Name: Maynard
Father's Surname: Goldsworth