When researching your family history, it is important to start with what you know about your parents, grandparents, etc. Do you know the name of your father's father? Do you know whether he might be Edward S.Penefsky, who was born in Pennsylvania in 1937 and died in Brevard county Florida on 12 Jan 1989? If that's your grandfather, then there are quite a few resources available to trace your family tree, back to your great-great-grandfather Stanley Penefsky, and his wife Elizabeth Jendrzeski, both born in Poland.
Please check your messages on Ancestry (little envelope at the top of the page, to the left of your username.
You probably already have the key to solving this mystery.