Born in Sioux Falls, South Dakota. Moved to Los Gatos as a very young girl and attended University Avenue Elementary and then on to Los Gatos High School, graduating class of 1953.

Met her late husband in high school, Robert (Bob) J. Helwig. Raised their five children in Los Gatos: Robert Jr. (Michelle) Helwig of Columbia Falls Montana; the late Rodney A. Helwig; Lorena M. (Dale) Thurman of Olympia Washington; Bonnie B. Harper of Bend; and the late Kristina L. Helwig. Also survived by five grandchildren, Jessica (Paul) Harrah, Lauren (Phil) Hill, Alyson (Everett) Dahl, Ryan (Clair) LaPoma, and Rodney (Alena) Helwig; 12 great grandchildren and many more family and friends. Future plans for memorial to take place in Sisters, where Evonne and Bob retired in 2001.