When Did Marion Mathie Die?

Marion Mathie was an English actress who appeared in the last four series of Rumpole of the Bailey as his fearsome wife, Hilda and many other roles in other productions, including Mrs Susan Wyse in the London Weekend Television adaptation of the Mapp and Lucia books by E. F. Benson. She had a memorable cameo as the concerned wife of a compromised diplomat in the classic episode Six Days in Department S (1968).