David, you left out some rather vital information, without which nobody here will be able to assist you -- DATES and PLACES!
You've included a long list of people here, but you gave no indication whatsoever -- none -- as to when anybody on that list lived!So when did each of them live?How long ago?That is, when was each born, and when did each die?You say your grandparents on your father's side came over from Romania.Well, WHEN did they come over?
You also gave little indication as to WHERE any of these people lived.You say you have death records of your grandparents.Well, where did your grandparents live?You say you have records of your parents moving "from New York".Well, where did they move to?And when?You say Lapadats in Canada and Lapadats in California do not seem to be related to you, but you gave no indication at all as to where YOUR Lapadat family lived.
As I said, if you're hoping for assistance from anybody here, you are going to have to supply a lot of additional information.
It's also very difficult to figure out from your list just how all the people on your list are related to each other.