The Magyars entered the Pannonian Basin in 896 AD and conquered it systematically, succeeding fully in 901. In 960, the ruling prince of the Hungarians, Géza, chose Esztergom as his residence. His son, Vajk, who was later called Saint Stephen of Hungary, was born in his palace built on the Roman castrum on the Várhegy (Castle Hill) around 969–975. In 973, Esztergom served as the starting point of an important historical event: during Easter of that year, Géza sent a committee to the international peace conference of Emperor Otto I in Quedlinburg. He offered peace to the Emperor and asked for missionaries.