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, Early Christian settlements are still visible today across the county. St Mullin's monastery is believed to have been established around the 7th century, with its ruins remaining evident. Old Leighlin was once a significant monastic site in Ireland and hosted a church synod in 630 AD that determined the date for Easter.