I am trying to find any ancestors from John Joseph and Margaret Tierney from County Cavan, Ireland. They were born in the 1800's and had 9 children together. I branch off from their 4th child Peter. Who later on married Margaret Keenan and had quite a few children of their own, one being my Grandfather Peter Joseph Tierney who married Florence Borg then had one son who is my Father, Peter Richard Tierney. Anyone related??