Names from [name_f]Brittany[/name_f], ‘the Cornwall of France.’ Mostly of Welsh and Cornish origin thanks to medieval settlers from the [name_f]British[/name_f] isles, these names have marinated in north-western [name_u]France[/name_u] for a millennium. Others are Breton-ised forms of [name_u]French[/name_u] names, such as [name_m]Aurelien[/name_m] to Aorelian.
LN: Paskoù, [name_m]Le[/name_m] Blevennec, [name_m]Salomon[/name_m], Laouenan, Rouz, Mevel
DW: [name_f]Rozenn[/name_f], [name_f]Izabel[/name_f], [name_f]Jenovefa[/name_f], [name_f]Azenor[/name_f], [name_f]Katell[/name_f], [name_f]Morwenna[/name_f]
DH: [name_m]Yann[/name_m], Aorelian, Enori, [name_m]Maël[/name_m], [name_f]Konan[/name_f], [name_m]Sulien[/name_m], [name_m]Neven[/name_m]
DS: Aogust, [name_m]Biel[/name_m], Gwenolé, Eozen, Iduned, Kaourintin, [name_m]Siprian[/name_m]
DD: [name_f]Enora[/name_f], Dafné, Koulma, [name_f]Lupita[/name_f], [name_f]Maiwenn[/name_f], Oanell, Marivon
DD: Bleza, Tifenn, Klervi, Lanwenn, Metig, [name_f]Nolwenn[/name_f], [name_f]Tekla[/name_f]
DS: [name_m]Edern[/name_m], Ael, [name_m]Gwion[/name_m], Kadioù, Jakoù, Lukian, Peranig, [name_u]Tristan[/name_u]
DD: Privela, Reunana, Solen, Tualenn, [name_f]Yuna[/name_f], [name_f]Nouela[/name_f], Trifina
DS: [name_m]Malo[/name_m], [name_u]Owen[/name_u], Rioù, Tudal, [name_m]Urien[/name_m], Roperzh, Nuz, [name_m]Jagu[/name_m]
DD: Gwenvred, Erell, Glannon, Ituda, [name_f]Alwena[/name_f], Koupaia, Maina
Bonus:
Old [name_m]Breton[/name_m] saints and kings… (anglicised)
DS: Nominoe, Pasquitan, Erispoe, [name_m]Conan[/name_m], [name_m]Meriadoc[/name_m], Wihomarc, Judicael, Gourmaëlon
DS: Winwaloe, Wethenoc, Budick, [name_f]Hawise[/name_f], Hoël, Guerech, Gurvand, Drogo
LN: Paskoù
DW: [name_f]Katell[/name_f] [name_f]Morwenna[/name_f] Paskoù
DH: [name_m]Sulien[/name_m] Enori Paskoù
DS: Kaourintin Eozen
DD: Oanell Marivon
DD: Tifenn Bleza [name_f]Nolwenn[/name_f]
DS: Ael Kadioù Lukian
DD: Solen Tualenn [name_f]Yuna[/name_f]
DS: Rioù Roperzh
DD: Ituda Gwenvred
(My source was the site below)