I did find this, but the odds that the email address is still usable after 14 years is slim. This person does seem to give information about Thomas's parents and siblings, though. What other resources have you looked at so far?
I am hoping that Phil Hind can post the previoues enquiries into this case as I need to ask Damian Quinn some questions relating to his claim of the 21st August 2011. Otherwise this case into Thomas Casey remains open for all too debate.
I am in contact with the Quinn family, Andrew if you need an email address.
Tom Casey was a Trimmer on the 12-4 watch and as such would have been a room mate of my G-Grandfather Walter Fredericks. I wonder if Tom was one of those who promised to buy Walt a beer in New York as they played cards at the mess table. (Walt turned 21 on 14th April 1912) It is certainly a possibility. The 12-4 Trimmers were housed on E-deck on the Starboard side of the ship in the bow