The best source on the Bass families of the south is Albert D Bell's book Bass Families of the South, which you can read on line here: http://babel.hathitrust.org/cgi/pt?id=wu.89062852793;view=1up;seq=242 he does not record more than one wife, and that wife was Catherine Lanier.
On the other hand the male descendants of William Basse belong to haplogroup A, which is the haplogroup of the San people of South Africa.
The descendants of his other sons, and of his brother, belong to haplogroup R1b1.. which is Celtic, ("aboriginal" British)
It is thought that William Basse was not born son of John Basse, but a freed indentured servant or slave that took up the Bass surname.
On the other hand William2, son of William1 grandson of John Basse1 married Sarah Lovina/ Leviner on 20 April 1729 [Bell, Bass Families of the South, Chapter on Nansemond Indian Ancestry of Some Bass Families, 15]. Sarah was a mulatto, however she contributed mtDNA, not YDNA. Sarah was the "Molatto" daughter of John Nicholls' "Negro" slave Jean Lovina. Sarah received 200 acres on Western Branch of Elizabeth River by her master's 11 November 1696 Norfolk County will, proved 17 May 1697 [WB 6, fol.95a-96]
See http://www.freeafricanamericans.com/bailey-berry.htm under Bass