Harold Siddons is a descendant of which Welsh-born actress?
Harold Siddons Harold Siddons (17 September 1922 – 4 November 1963) was a British film and television actor, appearing in "Genevieve", "The Dam Busters", "Appointment in London", "They Who Dare", "The Purple Plain", "Quatermass and the Pit", "A Night To Remember" and "The Wrong Arm of the Law". He was an RAF pilot during the Second World War and a descendant of Sarah Siddons.
Jeanne Mockford Jeanne Mockford (born 15 March 1926) is an English actress, probably best known as Senna the soothsayer in the British television 1969–70 comedy series "Up Pompeii!".