Also named William Seabright. Town Clerk of London 1574 - 1603.
From Sebright's Educational Foundation: "His first marriage was to the daughter of a Mr Goldsten of London. His second wife, Elizabeth, a beautiful and wealthy widow and the mother of Sir James Bourcher whose daughter, also called Elizabeth and Sebright’s god daughter, eventually became the wife of Oliver Cromwell. ... Between 1590 and 1593 he acquired twenty acres of land in Bethnal Green ... It was this land that became the endowment for the Sebright’s Foundation."
According to the plaque he had a house, Beechwood in Bedfordshire, but we have found no corroboration of this.