About Saint Gwenhael
Lived 450 – 550 (aged 99–100). Saint Gwenhael was a French monk.
Saint Gwenhael (; ; Old Breton: Guenhael) was a Breton saint of the 6th century, born at Ergué-Gabéric (Finistère), the second abbot of Landévennec Abbey, successor in 532 to the founder, Saint Winwaloe (Gwenole). The feast of Saint Gwenaël is 3 November.
Life His Vita was written in the 9th century.
He is said to have been born in Quimper, at the beginning of the 6th century, although the neighboring parish of Ergué-Gabéric claims him. Intelligent and precocious, his parents sent him to school very early. According to tradition, Winwaloe met Gwenaël in a street in Quimper when he was eleven, and was so convinced of his gifts that he at once obtained permission from Gwenaël's parents for him to study under his direction.
Gwenhael was raised at the monastery of Landevennec, where he became a monk in 511. Having noticed his extraordinary qualities, Winwaloe chose him as his successor. When Gwennolé died in 532, the monks took Gwenhael as abbot. But, after seven years, he resigned, left, with eleven other monks, first for the Channel Islands, then for Brittany, from there to Ireland to study the monastic life practiced there according to the rule of Columbanus. Throughout this journey, he worked to reawaken monastic fervor where relaxation had been introduced; and he founded new monasteries: he founded two or three large ones and reformed around fifty smaller ones.
Veneration His relics were transferred to the Cathédrale Saint-Pierre de Vannes. To save them from the Normans, they were transported, at the end of the 9th century, to Paris, then to Corbeil, where they were burned during the Revolution.
His cult is mostly found in the west of Brittany, as can be established after some deciphering of the various forms his name has taken. The church of Ergué-Gabéric (Finistère) is dedicated to him, under the name of "Saint Guinal". The parish churches of Bolazec, Lescouët-Gouarec, Plougonvelin, and Tréguidel are also dedicated to him. A statue of the saint is also found in the church of Poullaouen.
The saint's name is composed of the Breton elements gwenn "white, fair; blessed" and hael "generous".
According to Gwennole Le Menn, the saint's name is to be found in a number of placenames, including Locunel in Caudan, Saint-Guinel in Mauron, Saint-Guénal and Saint-Vinnel in Poullaouen, Lanvenaël in Plomeur, Saint-Vénal and Saint-Guénal in Landivisiau and Saint-Vénal in Saint-Pol-de-Léon. Kervénal also occurs three times, in Côtes-d'Armor, Finistère and Morbihan.
The surnames Guénal, Guénel, Trévinal and Kervennal doubtless have a connection with this saint's name, either directly or through a place name, such as the examples above.
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Important facts
People in Saint Gwenhael's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Saint Gwenhael's
Frequently asked questions
Who was Saint Gwenhael?
monk and missionary
When was Saint Gwenhael born?
Saint Gwenhael was born in 450 in Ergué-Gabéric.
When did Saint Gwenhael die?
Saint Gwenhael died in 550 in Roman Catholic Diocese of Vannes.
What was Saint Gwenhael's occupation?
Saint Gwenhael was a monk.
What nationality was Saint Gwenhael?
Saint Gwenhael was French.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Saint Gwenhael. https://biography.guide/saint-gwenhael/
MLA: "Saint Gwenhael." Biography.guide, https://biography.guide/saint-gwenhael/.
Chicago: "Saint Gwenhael." Biography.guide. https://biography.guide/saint-gwenhael/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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