Despite his faithfulness to Christianity, Muslim influence in the region had pervaded and influenced the culture and customs of the Christians living in Georgia and Armenia, especially after the Seljuk Turks invaded the Caucasus. Byzantine art scholar Anthony Eastmond, for example, notes that "many of the outward manifestations of rule were presented through Islamic customs and titles, most notably in his depiction on his principal foundation of Gandzasar." The image of Hasan-Jalal on the drum of Gandzasar's dome has him sitting cross-legged, which Eastmond remarks was a "predominant device for depicting power at the Seljuq court." Muslim influence was also seen in Hasan-Jalal's name: as a fashion of the time, many Armenians adopted Arabic patronymics ("kunya") that lost any "connexion with original Armenian names." Hasan-Jalal's Armenian name was Haykaz but the Arabic words in his name, in fact, described his person; thus, Hasan meant handsome; Jalal, grand; Dawla, wealth and governance.