Complex sentence: The other surviving ancient baronies include Kerry, now held by the Marquess of Lansdowne, Kingsale and Trimlestown; there were Irish earls before there were any barons as peers in Ireland, although most of them are now extinct or forfeited.
Split into simpler sentences: The other surviving ancient baronies include Kerry, now held by the Marquess of Lansdowne, Kingsale and Trimlestown. Note: there were Irish earls before there were any barons as peers in Ireland, although most of these are now extinct or forfeited.