As I said to the others, it's all explained at the site below, by Wayne Iggulden, who's done extraordinary research on the name and all its derivations - being in fact the most mispelled name in history! A shield of arms is also included.
Enjoy:
http://freepages.genealogy.rootsweb.com/~iggs
~Kinkazzo
http://daubmir.blogspot.comet al.