He was attainted and exiled, at which point this shadowy peerage became forfeit. He was attainted with his titles forfeited. He was attainted in 1678, with his titles forfeited. In 1589, he was attainted and his title forfeited. He was subsequently attainted and beheaded. In 1715, the second duke was attainted and his English peerages declared forfeit. A number of leaders from this area were attainted for high treason, convicted and hanged. In November 1487, he was posthumously attainted. Although the trial itself was inconclusive, Laud was later attainted and beheaded. Cromwell, the moving force behind the marriage, was attainted for treason. These titles became forfeit when the duke was attainted in 1554. Cromwell had been attainted and executed in 1540. Bothwell was formally attainted by Act of Parliament, dated 21 July 1593. Edward also pardoned many of those he attainted after they submitted to his rule. Sir Thomas was attainted and executed in 1537.