Alice St. Pierre

http://cybergata.com/roots/8131.htm

William, the eldest son of Robert, was living at Bulkeley, in the year 1302, and was twice married: first, to Maud, daughter of Sir John Davenport, Knight; secondly, to Alice, daughter of Vrian (or Bryan) St. Piere.

By the latter wife, he had one son, Richard, to whom he gave the manor of Prestland, in Cheshire, whereupon he assumed that surname, as did his descendents.

~Collins's Peerage of England, Vol. 8, pg. 8