Date: 17th March 1970 Theme: Burt Castle, Co Donegal Burt Castle is a ruined castle located close to Newtowncunningham and Burt, two villages in the east of Co Donegal. Historically it was sometimes spelt as Birt Castle. It is also known by the name O’Doherty’s Castle It should not be mistaken for O’Doherty’s Keep near…