You must do a proper genealogy in order to determine if you are related to the person who was granted these arms, or related to the family who passed on family arms such as Dutch, German, Flemish, etc.
This link will bring you to arms for the surname Skewes and variant spellings Skewis, Skewse, Skewys. Mostly from Cornwall
http://books.google.com/books?id=cmEBAAAAQAAJ&lpg=PT469&...