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Gourmaëlon or Wrmaelon (died 913/4), was the Count of Cornouaille and de facto ruler of Brittany from 907 – c. 914.[1] As ruler of Brittany he was considered Prince de Bretagne in some chronicles and histories. His actual history is among the least well documented of the early medieval rulers of Brittany. His reputed time of rule coincides with a dramatic increase in Viking invasions[2] that ultimately led up to the Viking Occupation of Brittany that began after his death.

He is believed to have been named Count of Cornouaille by Alan I, King of Brittany near the end of his reign in 907.[3][lower-alpha 1] After Alan I's death in 907 he disputed the right of Alan's heirs to rule Brittany and fought for the control of the kingdom, albeit without claiming the title king.[4][lower-alpha 2]

His life and activities are sparsely recorded in historical documents save for several donations to the Breton churches of the day. In a donation to the monastery of Plélan in 910 he is identified as "ruler of Brittany".[lower-alpha 3][5] At Redon in 913 he is identified as Count Gourmaelon, the Breton monarch.[5][lower-alpha 4]

He is understood to have died in 913 (or 914) in a battle with invading Vikings.[lower-alpha 5]

No subsequent ruler of Brittany is recorded in histories or chronicles of the period until the return of Alan II, Duke of Brittany, known as Alan Barbetorte, from England c. 937–938.


  1. In the Cartulaire de Landévennec, Uurmaelon comes Cornubia
  2. According to Poisson and Le Mat, his self proclaimed authority was considered more nominal than real (« autorité plus nominale que réelle »)
  3. In the Cartulaire de Redon (910), « Gurmahilon regnante Britanniam »
  4. In the Cartulaire de Redon (913) « Gurmahilon comitem qui tunc monarchiam Britanniae regebat »
  5. entrée dans le Manuscrit 476 de la bibliothèque d’Angers dit Anecdota novissima :« Anno DCCCCXIII Guuormaelon oc[cissus est] ».


  1. Price, p. 102.
  2. Price, p. 357.
  3. Cartulaire de Landévennec, pp. 154–155.
  4. Poisson and Le Mat, p. 69.
  5. 5.0 5.1 Cartulaire de Redon.


  • Poisson, Henri; Le Mat, Jean-Pierre (2000). Histoire de Bretagne (Second Edition). Coop Breizh. ISBN 978-2-84346-091-3.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • Cartulaire de Landévennec Chartre XXIV De Aeccleia Sanctus.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • Cartulaire de Redon Chartre CCLXXIX du 27 novembre 910.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • Cartulaire de Redon Chartre CCLXXVI du 25 octobre 913.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • Price, Neil S. (1989). The Vikings in Brittany. Saga-Book XXII 6. ISBN 978-0-903521-22-2.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

Additional Reading

  • Quaghebeur, Joëlle (2002). La Cornouaille du IXieme au XIIieme (Mémoire, pouvoirs, noblesse), Edition 2. Rennes: Presses universitaires de Rennes. ISBN 978-2-86847-743-9.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • de La Borderie, Arthur (1901). La chronologie du cartulaire de Redon. Rennes: Oberthur.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
Regnal titles
Preceded by
Alan I
King of Brittany
ruled de facto without title

Succeeded by
Viking Occupation
next holder
Alan II
Preceded by
Count of Cornouaille
Succeeded by
Viking Occupation
next holder
Alan II