The story
From queen's + town, after various monarchs and consorts of the British Empire. Doublet of Quainton and Queenston. Cf. Queensville, Kingstown, Kingston, Kingstone, Coniston, Princetown, Princes Town, and Princeton. Cobh was one of many places in Ireland that changed their names in the 1920s following the Irish Revolution.
Etymology from Wiktionary, CC BY-SA 4.0.