Alison Wall wrote a comprehensive history of the Baynton Family for the Oxford Biography. In it she describes the possible cionfusion surrounding the children of Sir Edward Baynton of Bromham and Agnes Rhys which some, including myself, our trying to link with William Baynton and Joan Baning,
"This Edward was much embroiled in lawsuits over land. His first wife, Agnes, daughter of Sir Griffith Rhys, whom he married about 1553, had been left an interest in lands belonging to William, Lord Stourton, whose mistress she had been. Stourton's heir tried, but eventually failed, to counter Agnes's claim to Stourton lands, and she and Edward held them from 1557. It is somewhat surprising that Baynton married her: there were rumours that she and Lord Stourton had actually married, and although unfounded they worried the Bayntons. So a memorial brass to Edward Baynton's two wives insisted that Agnes, who died in 1574, was 'his first trew wife' (Kite, 63). Their eldest son, William, died in 1564, allegedly the victim of witchcraft."