I am trying to finalise my family tree and I would like to be able to add my g.g.g.grandfather John SHANNON born around 1790/1800 and grandmother Martha McLURE born around the same time. They had one son, Hugh SHANNON, born Derry around 1822, that I know of who married Margaret HAMILTON, born Antrim around 1822, in Glasgow on 12 October 1838. If someone out there can help I would greatly appreciate it. Andrew