Celtic liturgies show the wide-ranging influence of the Irish missionary-monks, who tended to appropriate liturgical elements from all parts of the Greek and Latin churches. The Celtic liturgy emphasizes a strong personal relationship with Christ and with the Trinity.
Columba (c. 521-597) was a renowned Irish Celtic missionary. He was probably born in County Donegal. His father was a member of the reigning family in Ireland and his mother was descended from royalty.