Cognomen Gwennaël (Gwennaël 
) , across the world, is an extremely rare family name. Predominantly, Gwennaël is the forename as well as the last name.
Brun, Bernard, Kuhnlenz, Poussot, Roussel, Degorre, Nicolas, Coignard, Crosnier, Beirnaert, Desvigne, Guichard, Gourrada, Greffier, Houdayer, Bouteloup, Codet-Hache, Tchoungui, Meurrens, Maillet, Dias, Aubry, Cadet, Bauer, Berry, Dufil, Haeck, Martin, Mansuy, Sicaud, Cesbron, Postic, Delhière, Danion, Goffin, Mauguin, and Andrianarisoa