Genealogy site, about the LEITAO and BERIGO, or BEIRIGO surnames.
https://groups.yahoo.com/neo/groups/LEITAOBERIGO/info

Very good site for Portuguese genealogy.
http://www.dholmes.com/links.html

Best site for Portuguese genealogy.
http://www.cyndislist.com/create-a-link-to-cyndis-list/