Historia Salonitanorum atque Spalatinorum pontificum or the History of the Bishops of Salona and Split, commonly known simply as the Historia Salonitana, is a chronicle by Thomas the Archdeacon from the 13th century which contains significant information about the early history of the Croats. It was first published by Johannes Lucius. An extended version of this work, known as the Historia Salonitana maior was published in the 16th century, and critical editions of both have been republished by Nada Klaić (Belgrade: Naucno delo, 1967). The chronicle gives an account of the arrival of the Croats: This account may be considered more similar to that which is found in De Administrando Imperio than the Chronicle of the Priest of Duklja. The chronicle notes that by the time of the Byzantine Emperor Heraclius and Pope John IV, some Croats had been converted to Christianity. Both these men died in the mid 7th century, which leaves an estimate of the actual arrival of the Croats to the Adriatic at sometime in the early part of the century. It provides an extended information about the Croatian kings Demetrius Zvonimir and Peter Krešimir IV.