The high king Aodh, son of Ainmire called for what amounted to a nationwide assembly of kings and leading clerics among other issues to firstly consider the expulsion of all the Seanchaí, "filí" and the Bards, the event took place on Mullagh hill, Limavady and was known as the Synods of Druim Cetta. Dignitaries from all over Ireland or Scotia as the island was referred to back at that time. An important delegation also arrived from the Dál Riata which was at that time an oversea colony of Scotia, travelled to take part in the Druim Cetta, lead by St Columba and the then king of Dál Riata, Áedán mac Gabráin. According to some versions of the legends surrounding the event as St Columba had previously promised never to set foot on his native home land again after being banished to Iona, for his role ina event that was known as the Battle of the Book. When he returned for the Druim Cetta he refused to disembark from the boat. As a result the boat was carried, with him still inside it, to the place of the great assembly. This is depicted on the official coat of arms of Limavady.