Regan Father of is an answer to the crossword clue 'Lear', which is a reference to the character King Lear from William Shakespeare's play of the same name. King Lear is a tragic figure who is the father of Regan and Goneril, two of his three daughters. Regan is portrayed as a cruel and manipulative woman who is willing to do anything to gain power. She is ultimately responsible for her father's downfall.