It's a submitted record admittedly, but IGI has this record:
George Thomas FRAZIER
born about 1725 Inverness, Scotland
died about 1790 in Randolph, North Carolina
Father: John FRAZIER and mother Mary FALCONER
Married: Mary U PUGH about 1747 in Randolph, North Carolina
I think the birth years could be pretty fluid, and maybe even the death & marriage years? Even the place in Scotland where he was born. Probably they they are based on subtracting an "average" amount of years from an actual record - but
that record stated his parents names.....?
You may have been this route
but In the many LDS records on the stateside events of their children, some entries state there is a name and address of the submitter - Check the LDS Pedigree file and search Mary PUGH married George FRAZER USA - 18 results, some have the submitter details- and not all the same submitter - even if it is only a member of the church, following this lead may take you to the possible document which stated his parents names. One of the records said Mary was from Pembroke, Wales and the submitter gave an address and a website (now not available)......