There is a book printed by Frederick Francis Bourdon which traces the Bordeau,Bourdeau and Bourdon's back to 1645 and Jacques Bourdon from Rouen,France. The original spelling for the above is Bourdon. This book can be ordered the phone no. is 613 747 0707 and fax no. 613 747 0619. I have traced my Bourdeau family in htis record . Hope this helps you all.