After posting my interest for Denis Cassidy born 1826, County Queens, I searched the IGI for info. Denis named his first son John Thomas. I know that his father-in-law was Thomas Lee (probably from County Cork). Therefore, it is possible that the name John was in honor of Denis's father or grandfather. I did not find the father John, but did find a John Casidy born Jan 1824 in Mountmellick to Christy Casidy and Mary Mc Donald and am wondering if this John could be a brother to Denis....I realize this is nothing more than a guess.....for now. Does anyone else have any ties to Casidy and Mc Donald in Mountmellick? Frank in (ridiculous) Florida