6th-century Irish abbots

Columba () or Colmcille (7 December 521 – 9 June 597 AD) was an Irish abbot and missionary evangelist credited with spreading Christianity in what is today Scotland at the start of the Hiberno-Scottish mission. He founded the important abbey on Iona, which became a dominant religious and political institution in the region for centuries. He is the patron saint of Derry. He was highly regarded by both the Gaels of Dál Riata and the Picts, and is remembered today as a Catholic saint and one of the Twelve Apostles of Ireland.

Saint Columbanus (; 543 – 21 November 615) was an Irish missionary notable for founding a number of monasteries after 590 in the Frankish and Lombard kingdoms, most notably Luxeuil Abbey in present-day France and Bobbio Abbey in present-day Italy.

Irish abbess and saint (c. 451 – 525)

Irish saint

Cornish abbot and saint

Irish missionary

Irish abbot and monastic saint

saint, priest and abbot who preached across Ireland and Scotland.

Irish monk and poet

Saint Comgall (c. 510–520 – 597/602), an early Irish saint, was the founder and abbot of the great Irish monastery at Bangor in Ireland.

Irish monastic

Abbot of Lorrha

one of the Twelve Apostles of Ireland

6th-century Christian saint

Irish saint

Irish abbot and saint

Irish saint

Budoc of Dol (also Budeaux or Beuzec) was a 5th-century Breton monk and Bishop of Dol, who has been venerated since his death as a saint in both Brittany (in France) and Devon (in England). Budoc is the patron saint of Plourin in Finistère where his relics are preserved. His feast day was originally celebrated on 8 December, the date still used in Devon, but in Brittany this has been transferred to 9 December.

Saint Moninne or Modwenna of Killeavy was one of Ireland's early female saints. After instruction in the religious life, she founded a community, initially consisting of eight virgins and a widow with a baby, at Slieve Gullion, in what became County Armagh. They lived an eremitical life, based on that of Elijah and Saint John the Baptist. Moninne died in 517. Her feast day is 6 July.

Irish saint of Leinster

Saint Derchairthinn or Tarcairteann (fl 6th century) is venerated as a prioress and saint of the monastery of Oughter Ard in Ardclough, County Kildare. Her feast day is 8 March.

Irish confessor