Complex sentence: Leyland's reference to the moode (the Norman Motte) listed under the heading Castelles in Cair Arvonshire is the earliest reference to the Llys at Aber.Leland in 1537 stated that the palace remains were on the hill, indicating clearly Pen y Bryn/Garth Celyn.
Split into simpler sentences: Leyland's reference to' the moode'in 1537 is listed under the heading Castelles in Cair Arvonshire. He stated that the' palace'remains were' on the hill', indicating clearly Pen y Bryn/Bryn Llywelyn/Garth Celyn.