Henry Grey Suffolk, duke of, d. 1554, English nobleman. He became 3d marquess of Dorset on his father's death (1530), and in 1534 he married Frances, daughter of Charles Brandon, duke of Suffolk, and Mary of England (sister of Henry VIII). During Henry's reign he was active at court. Upon the accession (1547) of Edward VI, Grey at first supported the protectorship of the duke of Somerset but soon shifted his allegiance to John Dudley, earl of Warwick (later duke of Northumberland). He received favors at court and was created (1551) duke of Suffolk through his wife's claim. Lady Jane Grey was his daughter, and, upon the death (1553) of Edward, Suffolk joined Northumberland's plot to place her on the throne. However, when the plot failed, he deserted her cause and proclaimed Mary I queen. He was pardoned, largely because of his wife's friendship with Mary, but in 1554 he joined the rebellion of Sir Thomas Wyatt and was soon captured, convicted of treason, and executed.

Dorset, Henry Grey, 3rd marquis of, duke of Suffolk (1517–54). Dorset succeeded his father at the age of 13, and was lord high constable at the coronation of Edward VI and a knight of the Garter. In 1551 he was made duke of Suffolk. His second wife was the eldest daughter of Mary Tudor by Charles Brandon, duke of Suffolk, and he was the father of Lady Jane Grey. A zealous protestant, he became a close ally of the duke of Northumberland. He declared his daughter queen on the death of Edward, recanted, and was lucky to save his life. But the following year he was implicated in Wyatt's rising against Mary's Spanish marriage, was discovered hiding in a hollow tree on one of his Warwickshire estates, and executed. His widow married a ginger-haired groom sixteen years her junior soon after the duke's execution.

J. A. Cannon