Career
Wellton was married to Erik Hell from 1960 until his death in 1973. Wellton studied at Dramatens elevskola from 1950-1953 and was engaged at the Royal Dramatic Theatre until 1956. After 1956 she was engaged at many theatres, among them Östgötateatern and Riksteatern.
As film actor she is well known as Tommy"s and Annika"s mother in Pippi Longstocking.