Since I posted this, we've actually been given a copy of their marriage certificate. Of the 6 children she had, we've found that they all eventually moved to Victoria. One of the children was listed as a 'Christopher' in Tas archives, so not sure what happened there. We have found absolutely no trace of her before hand though. There was loads of Tiley's (and variations) in Tasmania, and I'm guessing the connection is hidden in amongst them somewhere. Is the site you refer to about the 'Christies', and talks mainly about James Scott Christie the convict?, if not, would love the link. We've even come across one of James Scott Christie's son's 50th Wedding Anniversary photo, with about 40 people, and we've been lucky enough to have met someone who was actually in the photo, and could name each and every person.