http://www.susanhigginbotham.com/Mediev ... htm#_edn18
Plantagenets at Play: Medieval Gambling
"This is the text of a presentation I did for the Richard III Society's Annual General Meeting in October 2009 in Las Vegas—hence the subject matter!"
Author: Susan Higginbotham http://www.susanhigginbotham.com/
Edmund Mortimer, Earl of March, was uncle to Richard, Duke of York, and therefore a great-uncle of Edward IV and Richard III. He had a good claim to the throne and for that reason, Henry IV and Henry V kept a close eye on him. In the period from September 1413 to April 1414, the twenty-three-year-old was traveling in the company of Henry V—and losing over 157 pounds in gaming. Mortimer’s companions must have been delighted when the young lord proposed a game of chance, because the word perdebat—“lost”—occurs with distressing frequency in his household accounts. Mortimer lost at tables, raffle and chance, a game called devant (apparently a dicing game)—and at cards.
Despite Mortimer’s enthusiasm for cards, it would be decades before another mention of them occurs in English sources. That is in 1459 in the Paston letters, where Margaret Paston reports that over Christmas, a widowed acquaintance forbade the members of her household to engage in dancing, harping, luting, singing, or “loud disports,” but permitted them to play tables, chess, and cards.
 Woolgar, Household Accounts, pp. 592-94.
= C. M. Woolgar, ed., Household Accounts from Medieval England, Part 2. Oxford University Press, 1993.
 Parlett, p. 46; Paston Letters, vol. vi, 78-79. Gairdner dates the letter in 1484, but as Parlett points out, it appears to be from an earlier time.
= David Parlett, The Oxford Guide to Card Games. Oxford University Press, 1990
collected at http://trionfi.com/0/p/45