Here are some things I've found that I'd like to share. I found the surname sayas at Sephardim.com. This name is Sephardic. I also found mention of the name Sayas when researching Navarra, Spain. I've found mention of the name Sayas in Aragorn which is part of Navarra, Spain. Hope this helps. Oh BTW my Sayas surname is most recently from Colonia, Uruguay. Happy Hunting