The Annals of Ulster (Irish: Annála Uladh) are annals of medieval Ireland. The entries span the years from 431 AD to 1540 AD. The entries up to 1489 AD were compiled in the late 15th century by the scribe Ruaidhrí Ó Luinín, under his patron Cathal Óg Mac Maghnusa, on the island of Senadh-Mic-Maghnusa, also known as Senad or Ballymacmanus Island (now known as Belle Isle, where Belle Isle Castle is located), near Lisbellaw, on Lough Erne in the kingdom of Fir Manach (Fermanagh). Later entries (up to AD 1540) were added by others.