Priscilla ap Rice

According to an article in The Pembrokeshire Historian, she was daughter of Sir Edward Littleton and sister of Sir William Littleton, Lord Keeper. A footnote says, "When Perrot's father suffered a Recovery of his estate in 1627, Adam and Thomas Littleton were parties to the transaction."

Unfortunately, Major Jones appears to have made a minor error. No Margaret is known among the children of Sir Edward Littleton. A Priscilla is documented as having been christened in 1604, and several alternate sources, including Littleton family records, do mention Perrot ap Rice's wife's name as "Priscilla".

However, other sources say the Lord Keeper was Edward Littleton, 1st Baron Lyttleton (son of the Edward Littleton who "had been Chief Justice of North Wales before him.") The younger LIttleton had an only daughter Anne, who married her first cousin Sir Thomas Littleton, 2nd Baronet (Wikipedia). Thomas Littleton, 2nd Baronet, was son of Adam Littleton, 1st Baronet.

Sources

• Major Francis Jones (Wales Herald Extraordinary), "Rickeston and Scotsborough : a study in family history" in The Pembrokeshire Historian (1966), 19-47.