It may have derived its name from dice games in which the face of the die with two pips is also called a Daus in German. Unlike the Ace, with which it may be confused, the Deuce represents the 2, which is why two hearts, bells, etc.
2 Card Poker Rules
1
Two Card Poker is typically played with a standard 52-card deck.
2
Each player places an ante bet before the game begins.
3
The dealer deals two cards face down to each player, as well as two cards for themselves.
4
The hand rankings in Two Card Poker are: pair, high card, and no pair.