Ros Treabhair

Ros Treabhair, meaning 'wooded promontory of Trevor,', combines the Irish element ros—indicating a wooded height or promontory—with the name of Sir Edward Trevor, a Welsh settler from Denbighshire who arrived in the early 17th century and married Rose Ussher, daughter of the Archbishop of Armagh. Before the Trevor settlement, the area was known as Caisleán Ruaidhrí (Rory's Castle), named after ...