Crimhthann mac Reachtghal (died 757) was

Abbot Abbot is an ecclesiastical title given to the male head of a monastery in various Western religious traditions, including Christianity. The office may also be given as an honorary title to a clergyman who is not the head of a monastery. The fem ...

of Clonfert, Ireland. He is very uncertainly associated with Crimthann the Warlike, who defeated the

Delbhna Nuadat The Delbhna Nuadat were lords of a large section of what is now Athlone in County Roscommon, situated between the Suca and Shannon rivers. A branch of the larger Delbhna The Delbna or Delbhna were a Gaelic Irish tribe in Ireland, claiming kin ...

at the battle of Bealach Cro in 756, during the reign of King Aedh Ailghin of

Uí Maine U or u, is the twenty-first and sixth-to-last letter and fifth vowel letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''u'' (pro ...

, died 767.

References

* ''Annals of Ulster'' a
CELT: Corpus of Electronic Texts
a
University College Cork
* ''Annals of Tigernach'' a

a
University College Cork
of McCarthy's synchronisms at Trinity College Dublin. * Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, * Lysaght, Eamonn (1978), The Surnames of Ireland. , pp. 233–34. People from County Galway 8th-century Irish abbots 757 deaths Year of birth unknown {{Ireland-reli-bio-stub