Complex sentence: After the defeat of Degsastan the annals report nothing of Áedán until his death six years after the battle, perhaps on 17 April, 608, the date coming from the Martyrology of Tallaght, composed around 800.
Split into simpler sentences: After the defeat of Degsastan the annals report nothing of Áedán until his death six years after the battle. His death is dated to 17 April 608 in the Martyrology of Tallaght, composed around 800.