I certainly do. We talked about the Parthians in the history class I teach, just two weeks ago. Any idea what the blindfold and gag were for? Perhaps the guy had been executed by the state.
At any rate, I see some theories, and maybe even a story coming out of this. In Egypt, for example, the finding of a mummy who may have been buried alive (Unknown Man E) was the inspiration for all the horror movies about mummies.
My guess is, P.O.W., or a hostage. Since hostages were typically children of conquered tributary rulers, they'd be killed, but given a decent burial. Elam went through at least three capitals, struggled for control over Mesopotamia (Kudur-Laghamar being the high king "Chedolaomer" mentioned in Genesis), and eventually vanished under more or less foreign control.