(n) United States actor; husband of Georgiana Emma Barrymore and father of Ethel Barrymore and John Barrymore and Lionel Barrymore (1847-1905), Syn. Maurice Barrymore, Herbert Blythe
(n) English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984), Syn. Paul Adrien Maurice Dirac