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 Konvael.
Borrowed from Breton Koulm.
Borrowed from Breton Kunwal.
Borrowed from Breton Erwan.
Borrowed from Breton Iltud.
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 Konvael.
Borrowed from Breton Kunwal.
Borrowed from Breton Koulm.
Borrowed from Breton Katell.
Borrowed from Breton Maelle, from maelle (literally “princess”).
Sibling matches balance shared style and origin with enough sound distinction, so recommendations do not simply rhyme with Rioc.