Clarification:
In order to prove Laurence Herman Versluis' African ancestry, visit http://www.familysearch.org/eng/search/AF/pedigree_view.asp?recid=36306037&familyid=9818031&frompage=99 (has John Thomas Grinstead on it) and just follow the arrow until you reach William Grinstead (born in 1634) and click on his name and you found his African-European wife Elizabeth Key! No kidding!