<Li> Carrickfergus was formerly a county of itself, it extended further than the modern borough of Carrickfergus . It was merged into County Antrim in 1777 . </Li> <Li> Antrim, Blathewyc, Cragferus, Coulrath, del Art, Dun, Ladcathel and Twescard, the seven counties that formed the Earldom of Ulster in 1333 . </Li> <Li> In 1549, Ulster itself was called a county containing the baronies of Arde, Bentry, Dondalk, Dufferens, Gallagh, Grenecastle, Kroghfergous, Lacayall, Maulyn, Twscard, and Glyns . </Li>

Northern ireland country that starts with a t