Regarding Tommy's relation to Bobby Sands: I once asked Tommy's brother Ben about that, and as far as they know, there is no direct relation. However, Ben said that since they are from the same part of the country it is very likely that they have some distant relationship somewhere to Bobby and to any Sands from that area. (An aside to that is that Bobby's brother Sean, who still lives in the north of Ireland, is also a musician and performer).