The surname Darancette came about on 3/10/1340 when the French Lord of Aquitane made Guiche residents take the name of the house (clan) to which they belonged. The house Arancette still exists in Guiche France. The Spanish variant is Arantzeta.
I love family stories like that!
Guess I'm going to have to do a bit more research on the history of the Basques... Fascinating folk!