Drennón Tzolagar I was the warlord that conquered and unified all of Ys under one banner in the first century of the Qh'énnish Ascension.   The genitive form of his family name (Tzolagar → Tzolgarin) to refer to the familial line that would rule his new kingdom ("the Tzolgarin Kingdom of Ys") well into the fifth century.   A weak-looking, frail and aged man, Drennón Tzolagar was most know for the huge ruby that is affixed in his head where his left eye once was.