Genealogical History of the Gassaway Family @ Page 7. Citing Maryland Patents, Liber 5, folio 457 and Liber~~4, folio 109.
The cited information was published by Self, 1990, held in
Daughters of the American Revolution Library (Ref: Page 7. Citing Maryland Patents, Liber 5, folio 457 and Liber~~4, folio 109.) The author/originator was Rutherford, William Kenneth and Anna Clay Rutherford.