Follow-up question: How did certain cards in various games gather their names, such as the left and right "bauers" of Euchre or the "vixer" and "old lady" of Solo?

If I understand correctly, the games I gave as example are historically of German origin, which could have a role in the naming of the specific cards. In fact, "Bauer" means farmer in German, but how did the cards get these names?

This might possibly already get answered with the original question, but Id like to put it out there as a follow up just in case:

Depending on how far back this goes, were card games more common among wealthier or poorer class people? Or for everyone like it is now? It seems like Poker (for example) nowadays is portrayed in a "classier" way(betting money, got the cigars and scotch going and all that as a cliche), but it being such a simple, inexpensive activity, cards seem like something the more lower class would play to have fun and pass the time.