na Bóinne , IPA:  [ˈkah n̪ˠə ˈbˠoːn̪ʲə] ) was fought in 1690 between two rival claimants of the English, Scottish, and Irish thrones – the Catholic King James and the Protestant King William (who had deposed James in 1688 ) – across the River Boyne near Drogheda on the east coast of Ireland .