Ardie Tillman (aka Julia Ardelia Waters Tillman née Waters)
Ardie Tillman portrayed the character Rosemary in the Wheel Records pop group, the Rock Flowers. Ardie is known mostly for her work with the Rock Flowers in the early 70s as well as her work with the family group, The Waters, which are well known and respected backup vocalists. It's likely that you've heard their work before without having realized it!
For more info on Ardie, check out the The Waters' website!