BeauchampEnglish, French Habitational name for a person for any of the various places named Beauchamp in Northern France, derived from Old French beau "beautiful" and champ "field".
De BoisArthurian Cycle Possible form of the French surname Dubois. This is the last name of Prince Arthur's mother Ygraine de Bois in the series Merlin.
De ClermontFrench Means "of the bright hill" from the French de meaning "of" and clair, cler 'bright', 'clear' + mont 'hill'
Du LacArthurian Cycle In the series Merlin, this was the surname of Sir Lancelot: Lancelot du Lac. du Lac possibly means "of the lake."
MeriwetherEnglish Means "happy weather" in Middle English, originally belonging to a cheery person.