I want to know the answer to the following question:
Who was the founder of the Martorana church?
All the background I'm provided with is that "The mosaic depicting Roger II of Sicily, dressed in Byzantine imperial robes and receiving the crown by Christ, was originally in the demolished narthex together with another panel, the Theotokos with Georgios of Antiochia, the founder of the church.". Is that enough to answer the question?