The paragraph you give from the publication you cite is extracted from the 17-volume set, arranged alphabetically, that was compiled from original material in the Massachusetts State Archives.
You can find the volumes here, free (both searchable and browsable) (click on 'Military' link):http://www.evendon.net/PGHLookups/HomePage.shtml
There is some overlap in the books with what the National Archives has and has microfilmed, but each has material not found in the other's collections. In the case of the entry you list, you can write the Mass. Archives for a copy of the original roster. But the National Archives has very little regarding Mass. Militia records that were generated in the Towns.
When you look in the publication, do try name spelling variants; the site lets you use wild-cards in searching, also, with a good explanation.
The books are pretty old -- Mass. Archives may have acquired material that is not extracted in the volumes, and has many manuscripts not abstracted in the publications, such as individuals' journals and other collections. So you may well find goodies if you go to Mass.
You'd need to research your target person's land, tax, and any court and church records to determine what his life path was around the period of the Rev. War. This would be research done in person mainly in Town records -- again at the Mass. Archives for starters, but also the New England Historical and Genealogical Society has manuscript collections and a wealth of material in general.
Posting on this message board is unlikely to locate anyone who's done particular research already on this person - the surname message boards would be one place to post.