In 980 Hywel ap Ieuaf King Gwynedd defeated Custennin ab Iago Aberffraw, son of his former enemy Iago ap Idwal Aberffraw (38) at the Battle of Anglesey, at Anglesey. Custennin was killed; he was supported by the Viking Gofraid mac Arailt Ivar.
St Marys and St Nicholas Church
On 10 Oct 1918 Alexandra Phyllis Hamilton drowned whilst travelling from Dún Laoghaire to Holyhead aboard the mailboat RMS Leinster that was torpedoed and sunk by German submarine UB-123.
St Cybi's Church
Llanfaes Priory Chancel
Llandrillo yn Rhos Church
In 1277 Edward "Longshanks" I King England (37) and Llewellyn "Last" Aberffraw (44) signed the Treaty of Aberconwy by which Llewellyn "Last" Aberffraw (44) agreed that Welsh self-rule would end with the death of Llewellyn "Last" Aberffraw (44) . As part of the Treaty Owain "The Red" Aberffraw (44) was released from Dolbadarn Castle.