St Manchan&#x27;s Church  AKA St Monaghan&#x27;s Church  The 10th-12th century parish church ruins stand on land given to St Manchan by St. Ciaran of Clonmacnoise in order to build a monastery here in 645AD. It is believed that the land, referred to as &quot;the island in the bog&quot;, had been given to St Ciaran in 644 as a thank you from Diarmuid, High King of Ireland who had stopped off at Clonmacnoise to ask the monks for their prayers for his battle success.