Recommendations avoid excessive rhyming and favor compatible style, origin, era, and rhythm.
Borrowed from Irish Brian. Doublet of Brendan. Via English Brian from Irish Brian, ultimately from Breton Brien. From English Brian, from Irish Brian.
Borrowed from Breton Kadeg.
Borrowed from Breton Karadeg.
Borrowed from Breton Koneg.
Borrowed from Breton Konogan.
Borrowed from Breton Konvael.
Borrowed from Irish Brian. Doublet of Brendan. Via English Brian from Irish Brian, ultimately from Breton Brien. From English Brian, from Irish Brian.
Borrowed from Breton Kadeg.
Borrowed from Breton Karadeg.
Borrowed from Breton Koulm.
Borrowed from Breton Katell.
From Breton. A feminine form of Maël.
Sibling matches balance shared style and origin with enough sound distinction, so recommendations do not simply rhyme with Suliane.