Well, there is another linkage that very few people know about Italian and Celtic culture. The Italian playing card deck is made of 40 cards in four suits. Suits are: swords (spade), staves (bastoni), cups (coppe) and coins (denari). Each suit consists of an ace, six numbered cards (two to seven), a knave, a horseman, and a king.

Italian suits originate from the four magical objects brought by the Tuatha de Danaan to Ireland and mentioned at the beginning of the Second Battle of Moytura: cups from the Dagda's Cauldron, staves from the Spear of Lugh, coins from the Stone of Fal, and swords from the Sword of Nuada.


You can see some other decks here: http://a_pollett.tripod.com/cards5.htm