My name is Catherine Wilkinson and i too am searching the same area.
my grandfather is Pierre "Pete" Borderre who was born in Urepel.
i have someone helping me with his genealogy but i am curious about the area from where he comes from; also the name Etcheverry appears on a document - a marriage certificate from 1885. the couple was Catherine Borderre and Michel Etchart.
i hope these names mean something to you - i know this is a bit of a stretch, but i have been searching, re-searching this background for a long time. even have pictures.
i hope you can help me with some information, if not would like to hear what you have on the name (somehow i feel there maybe a connection).
thanks
cathy