Theres no French influence neither in the vocabulary nor  in the pronunciation of Brezhoneg (Breton). I am about to complete my fourth year studyufeff of Brezhoneg and after much indepth research into and learning of this Language I can say that its an ANCIENT Language that has escaped modifying or distorting influences despite the kind of history accompanying it. I now write, speak and translate Brezhoneg. Keltic Languages are same as Luo Language (shores of Lake Victoria and Nile).