Not ignorant at all. I've been searching for quite a while now and wish I had started earlier. (I keep running into brick walls but have collected some information. I'm told that, in Poland, the name Janiszewski is as common as the name Smith is here in the US.) Now there's only my father's 91 year old sister left. She's a wealth of information. I don't recognize any of the names you provided, but I'll ask her. I do know of a couple Janiszewski ancestors that changed their names to Johnson though. I'll get back to you if my aunt can connect with the info you provided.