 Henry II was a member of the Ottonian dynasty of kings and emperors who ruled the Holy Roman Empire (previously Germany) from 919 to 1024.In relation to the other members of his dynasty, Henry II was the great-grandson of Henry I, great-nephew of Otto I, first-cousin once removed of Otto II, and a second-cousin to Otto III.Between 1012 and 1018 Thietmar of Merseburg wrote a "Chronicon", or "Chronicle", in eight books, which deals with the period between 908 and 1018.