WordNet sense 1 (English actor on stage and in films (1908-1990)):

Rex Harrison, Reginald Carey Harrison, Sir Rex Harrison

WordNet sense 2 (English rock star; lead guitarist of the Beatles (1943-2001)):

George Harrison

WordNet sense 3 (23rd President of the United States (1833-1901)):

Benjamin Harrison, President Benjamin Harrison, President Harrison

WordNet sense 4 (9th President of the United States; caught pneumonia during his inauguration and died shortly after (1773-1841)):

President William Henry Harrison, William Henry Harrison