Conversation so far:
where was Glenda Jackson born?
Jackson was born in Birkenhead on the Wirral, Cheshire
where did Glenda Jackson attend school?
Jackson was educated at the West Kirby County Grammar School for Girls
who were Glenda Jackson's parents?
her father was a builder, and her mother worked in shops and as a cleaner.
when did Glenda Jackson begin her acting career?
Jackson made her professional stage debut in Terence Rattigan's Separate Tables in 1957
what was Glenda Jackson's first film?
Her film debut was a bit part in This Sporting Life
what did Glenda Jackson's do after her debut film?
A member of the Royal Shakespeare Company (RSC) for four years from 1964
What roles did Glenda Jackson play as a member of the Royal Shakespeare Company?
She originally joined for director Peter Brook's 'Theatre of Cruelty' season which included Peter Weiss' Marat/Sade (1965) in which she played Charlotte Corday, the assassin of Jean-Paul Marat.

Question: Did she play any other Shakespeare roles?
Self-contained rewrite: Did Glenda Jackson play any other Royal Shakespeare Company roles besides Charlotte Corday in Marat/Sade?