O'Leary and Peplinski family

I am currently researching the O'leary family from St. Louis, MO. Dennis O'Leary worked at a cemetery in the early 1900. I am also looking for any information on the Peplinski family from Erie PA. I have no information on them. All I know is that the family lived in Erie in the 1940's.
The McDaniel and the Crick family from Kentucky, is also in my search. Any information on a Thomas Wylie McDaniel would be very helpful. It is believed that he may be an orphan. He was alive from 1850-1936, and he lived in Calloway Co KY. Any information would be greatly appreciated. I am also willingly to share my information.