That was a VERY good question - and the answer I expected.
I've been playing online casinos for 8 years (over 160 different ones) and to be honest I only know who owns about 3 or 4 of them.
This information SHOULD be public knowledge, but since Mandarin Palace are soliciting deposits from USA players (only) and with the UIGEA bill still in place, it's not that surprising they want to keep it a secret.
Personally I very strongly suspect they are owned by the same people as the Grand Prive Group - the only out-and-out thieving rogue MG casino group.
KK