Friedrich, played by Nicholas Hammond
The Sound Of Music was just the beginning of a flourishing career in entertainment for Nicholas.
His best-known role is probably his performance as Peter Parker in the television series The Amazing Spider-Man.
He went on to play guest roles in popular shows such as The Love Boat, Magnum, P.I. and Murder, She Wrote as well as a recurring part in Dallas.
Now 66, he lives in Australia with his partner, actress Robyn Nevin, and works as an actor, writer, and director, and has an English degree from Princeton to his name.
Gretl, played by Kym Karath
Five-year-old Kym stole hearts when she played the youngest child Gretl.
Roles in Lost In Space and The Brady Bunch followed but after going to college at USC, she focused on parenting rather than performing when her son Eric was born with disabilities.
Along with other parents, Karath helped establish the Aurelia Foundation, which provides services for special-needs individuals once they finish high school.
Now 58, Karath is returning to her entertainment career as an actress and writer.
Click “Next” to see what more of what the rest of the Von Trapp children are up to today.