About John Trevasgus (Trevalscois)
- Virginia cousins: a study of the ancestry and posterity of John Goode of Whitby, a Virginia colonist of the seventeenth century, with notes upon related families, a key to southern genealogy and a history of the English surname Gode, Goad, Goode or Good from 1148 to 1887 (Google eBook). George Brown Goode. J. W. Randolph & English, 1887 - 538 pages. Page 455: Trenance, of Trenance in Withiel, Cornwall.