The descendants of Rebecca Izard and John Izard Wright were the last to produce any Wright-surnamed descendants of SIr James Wright, the last dying in 1860 or so. The only desc. today of Sir James Wright, via the Izard links (two of them) are those of the SHAND family of Columbia, SC. No one surnamed Wright is a descendant.
Jermyn Wright, brother to Sir James Wright, died in 1799 in London area, left a will, and left NO descendants. He never married, and his will verifies the fact that he had no offspring. Whomever came up with that story is way off base.