Newhall is an Irish country estate near Ennis in County Clare, which includes a 17-bedroom 17th-century Georgian country house. The estate, held by successive members of the gentry, contains a holy well, and has an associated legend concerning a mermaid. It also includes gate lodges, woodlands, parklands, lakes and Killone Abbey, a national monument and Saint John the Baptist Holy Well which is recognised by the Catholic church as a miracle well for sore eyes, headaches and toothaches.

Killone Abbey, situated in Killone, some 5 kilometres south of Ennis, County Clare, was a nunnery and abbey of Canonesses Regular founded in 1190 by Donal Mor O'Brien, King of Thomond and Munster and dedicated to Saint John. It lies on the banks of Killone Lake.