Re: Byasia Byasse Byassee Byase
Gwathmey does not give any of the spellings you give.
Either your source is unreliable or someone changed the spelling in the course of transcribing the entry.
Gwathmey gives 3 entries for one or more persons said to have been on the rolls of the 1st VA Regiment (Continental):
John Buyes, Bayas, Byas
These rolls can be hard to read, on one hand, and on the other various persons writing the rolls may give variable spellings for a single person.
If you go here you can find what microfilm rolls contain rosters for the 1st VA (Continental):
You can borrow the microfilm from the National Archives by inter-library loan.
If you go here you can find more information on the regiment, possibly including what area it was recruited from:
If you want more information on the actual person, surname message boards may be helpful.Military records very rarely have personal information about the soldiers.