Siân Phillips
From Wookieepedia, the Star Wars wiki.
Siân Phillips played Charal in Ewoks: The Battle for Endor. She is best known for once being married to Peter O'Toole and her performance as Roman empress Livia in the British miniseries I, Claudius (alongside Brian Blessed). She also portrayed Reverend Mother Mohiam in David Lynch's science-fiction epic Dune.
