 His father, William Redmond, was a Home Rule Party MP for Wexford Borough from 1872 to 1880 and was the nephew of the elder John Edward Redmond who is commemorated in Redmond Square near Wexford railway station.Willie Redmond's five-years elder brother was John Redmond who became leader of the Irish Parliamentary Party, and he had two sisters.His mother was a daughter of General R.H. Hoey of the Wicklow Rifles and the 61st Regiment.