1776c – Downhill House, Co. Derry Architect: Michael Shanahan Frederick Hervey commissioned work at Downhill Demesne near the village of Castlerock in the early 1770s,
1787 – Ballyscullion House, Co. Derry Architect: Michael Shanahan Ballyscullion House was one of three eccentric palaces built by the equally eccentric Frederick Augustus Hervey,