Sir Walter Butler, 1st Baronet (died 1650) was an Irish nobleman. He was created a baronet, of Polestown, in the Baronetage of Ireland on 8 July 1645.George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume III, page 268.
