This is a list of names in which the categories include Welsh philosophers.
BertrandmFrench, English, Germanic Derived from the Old German elements beraht meaning "bright" and rant meaning "rim (of a shield)". From an early date it has been confused with Bertram and the two names have merged to some degree. Saint Bertrand was an 11th-century bishop of Comminges in France. Another famous bearer was the English philosopher Bertrand Russell (1872-1970).
Dewi 1mWelsh Possibly from Dewydd, an Old Welsh form of David. Saint Dewi, the patron saint of Wales, was a 6th-century bishop of Mynyw. A later Welsh form of David was Dafydd, which was more common in the medieval period. Dewi was revived in the 19th century.
HywelmWelsh From Old Welsh Higuel meaning "eminent, prominent" (literally "well-seen"). This was the name of a few Welsh kings, including the 10th-century Hywel the Good who was known for establishing laws.
ZephaniahmBiblical From the Hebrew name צְפַנְיָה (Tsefanya) meaning "Yahweh has hidden", derived from צָפַן (tsafan) meaning "to hide" and יָהּ (yah) referring to the Hebrew God. This is the name of one of the twelve minor prophets of the Old Testament, the author of the Book of Zephaniah.