William Wilde was Ireland's leading oto-ophthalmologic (ear and eye) surgeon and was knighted in 1864 for his services as medical adviser and assistant commissioner to the censuses of Ireland. He also wrote books about Irish archaeology and peasant folklore. A renowned philanthropist, his dispensary for the care of the city's poor at the rear of Trinity College, Dublin, was the forerunner of the Dublin Eye and Ear Hospital, now located at Adelaide Road. On his father's side Wilde was descended from a Dutchman, Colonel de Wilde, who went to Ireland with King William of Orange's invading army in 1690, and numerous Anglo-Irish ancestors. On his mother's side, Wilde's ancestors included a bricklayer from County Durham, who emigrated to Ireland sometime in the 1770s.