Question: Who is John De Mowbray, 4Th Duke Of Norfolk's child-in-law?
Sentence (from "Anne de Mowbray, 8th Countess of Norfolk"): Anne de Mowbray, 8th Countess of Norfolk, later Duchess of York and Duchess of Norfolk (10 December 1472 – c. 19 November 1481) was the child bride of Richard of Shrewsbury, 1st Duke of York, one of the Princes in the Tower.
Relevant evidence: Yes