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Michael Redgrave was Natasha Richardson's grandfather. Redgrave was a renowned British actor, director, and author, best known for his roles in films such as "The Lady Vanishes" and "Mourning Becomes Electra." He was also a respected stage actor, performing in numerous Shakespearean productions. Richardson, who was Redgrave's granddaughter through her mother Vanessa Redgrave, inherited her grandfather's passion for acting and became an accomplished actress herself.