GIOVANNI XVII, POPE. – A Roman, elected in June 1003, died in December of the same year. Giovanni Siccone was appointed successor to Silvester II through the agency of the patrician Crescenzo, all-powerful in Rome after the death of Otto III.
BIBL.: Lib. Pont., II, p. 265; R. Poupardia, Notes sur la chronologie de Jean XVII, in Mélanges d'archéologie et d'histoire, 21 (1901), p. 387 ff.