The Latin Emperor of Constantinople was beheaded by Kaloyan of the Bulgarians in the 13th Century and his skull was used as a drinking cup for wine just as Krum had beheaded Nikephoros in the 9th Century. Saul was mentioned to be beheaded when he had fallen slain in 1Samuel the 9th book of the bible and 1Chronicles the 13th book and his head was placed in the temple of Dagon of the Philistines:
http://thebiblewheel.blogspot.com/20...entury_97.html

Kaloyan and the head of his enemies:
http://thebiblewheel.blogspot.com/20...h-century.html