I don't know. I was adopted as an infant and I have no family history.
he family I was adopted into, however, is French. We are descended (note the spelling, Lucas. What you have in your title is 'decent', not 'descent') from the illegitimate son of William the Conquerer, and we have castles, mountains and streets named after us.
http://www.picturesofengland.com/England/Derbyshire/Castleton/Peveril_Castle
http://myweb.ecomplanet.com/kirk6479/mycustompage0017.htm
One of our ancestors also managed to piss off the King and got himself imprisoned in the Tower of London, where he carved his name in the stone wall so's the paeople would know he'd been there (ancient graffiti, hehe)