Now part of the diocese of Kildare and Leighlin, several Early Christian settlements are still in evidence today around the county. St Mullin's monastery is believed to have been established around the 7th century, the ruins of which are still in evidence today. Old Leighlin was the site of one of the largest monastic settlements in Ireland and the location for a church synod in 630 AD which determined the date of Easter.
Now part of the diocese of Kildare and Leighlin, numerous Early Christian settlements remain visible today throughout the county. St Mullin's monastery is thought to have been founded around the 7th century, with its ruins still discernible. Old Leighlin was once home to one of Ireland’s largest monastic communities and served as the site for a church synod in 630 AD that set the date for Easter.