honestly, I don't have papers on him. I know that he owned/operated a bar in Rosedale, Queens, NY. He married Marie Karcheck. I can find her listing in the social security death index. My husband remembers going to the cemetery in Rosedale where they are both interred. I can't find Rudolph in the death index. Not sure if that means he passed before social security numbers were required. I know that Marie was born in NY state and she and Rudolph married stateside. Her parents were both from Germany. I didn't start becoming interested in genealogy until Grandpa Bill had passed. I'm sure he could have given me info. Interesting thing is the the Csontos families that live in the Jersey City area (my husband's family) and the Csontos family that lives in Bridgeport, CT, have a few generations named William John Csontos. Wonder what is so special about that name?