I am sorry, but I have not run across a Keating name.One of the problems that is so difficult with the Marrie/Malia families is that they all had the same names!I cannot tell you how many Michael, Thomas, Patrick, John, Mary, and Bridget's there were!I've come to learn that most of them had nicknames and now I understand why!Otherwise, you would have yelled for Michael Malie or Michael Marrie and 15 boys would have come running!
At any rate, I know that some of the Malia's did stay in the Pittsburgh area but the Mary Malia that was my grandmother's sister married a man named Larkin.So I don't think this is the same one you're looking for.
The St. Mary's you mentioned, that is the name of the cemetary where most of the Marrie/Malia's from the Sharpsville area are burried.St. Bartholomew's is the name of the church (which is still in existance), where all of the Marrie's and Malia's from Sharpsville belonged.
I hope that helps you somewhat.I haven't had the time to work on my search for a very long time but, if I run across any Keating's I will be sure to let you know.