Mowbray Estate after William (Viscount) Berkeley, Earl of Nottingham

I am trying to trace the Mowbray estate after William de Berkeley.

In January 1483 Parliament passed an act that gave the Mowbray estates to Richard, Duke of York and Norfolk, for his lifetime, and at his death to his heirs, if he had any. The rights of the two co-heirs at law were extinguished; William (Viscount) Berkeley had financial difficulties and King Edward IV paid off those debts. Berkeley then renounced his claims to the Mowbray estate before parliament in 1483.

On 15 January 1478, in St. Stephen's Chapel, Westminster, when he was about 4 years old, Richard, son of Edward IV, married the 5-year-old Anne de Mowbray, 8th Countess of Norfolk, who had inherited the vast Mowbray estates in 1476. Because York's father-in-law's dukedom had become extinct when Anne could not inherit it, he was created Duke of Norfolk and Earl Warennne on 7 February 1477. He was created Earl of Nottingham on 12 June 1476. When Anne de Mowbray died in November 1481 her estates should have passed to William, Viscount Berkeley and to John, Lord Howard. In January 1483 Parliament passed an act that gave the Mowbray estates to Richard, Duke of York and Norfolk, for his lifetime, and at his death to his heirs, if he had any. The rights of the two co-heirs at law were extinguished; Viscount Berkeley had financial difficulties and King Edward IV paid off those debts. Berkeley then renounced his claims to the Mowbray estate before parliament in 1483.

Of course, Richard, being one of the two Princes in The Tower, perished. But what happened to the Mowbray estate?

By 1541 a large part of the Mowbray estate (the Vescy lands) was in the hands of the Percys, Dukes of Northumberland, but how it passed from William Berkeley, via Richard, Duke of York, to the Percys still puzzles me.

Can anyone fill in the gap?

Wibs

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