I am seeking information about my grandparents. My Grandmother Marie O'Rourke (1876) and her sister Katherine (1875) were children of Peter O'Rourke and Bridget Connerlly. They migrated to Philadelphia with a history of being born in County Wicklow. I am not able to locate any birth records for either. All of the items I've been able to locate are so poorly scanned they are difficult to read and I'm not sure if Peter would have been Petri in some of the documents.
Any assistance would be greatly appreciated. Did discover a photo that indicated Peter had a brother "Thomas".