GIOVANNI XVII, POPE. - A Roman, elected in June 1003, died in December of the same year. Giovanni Siccone was placed as successor to Sylvester II by the patrician Crescenzius, who wielded great power in Rome after the death of Otto III.
BIBL.: Lib. Pont., II, p. 265; R. Poupardin, Notes sur la chronologie de Jean XVII, in Mélanges d'archéologie et d'histoire, 21 (1901), pp. 387 ff.
G. Battista Picotti