Hello Mike, the Mcgrotty /Hodge connection is quite recent. A cousin of mine (still living) is a descendant of HENRY MCGROTTY. She married into the Australian HODGE family. It would definetly be a huge coincidence to find another earlier MCGROTTY / HODGE connection. Still, stranger things have happened!!
Your guess is as good as any regarding the McGrotty lad. You never know, one of us may stumble on the answers during our research.