Hiya Mark, did a Google Image search and found this: http://gaming.unlv.edu/ElRanchoVegas/Stamos.html

Shows that the guy on the right is indeed Beldon Katleman who was a nasty guy if'n you were one of his minions. Don't know who the lady with all the sparklers was. Could be a high roller wifey or Mrs. Liverspot 1958. Don't think Beldon had a mother but...