Background: St. John Lateran, the Pope's cathedral Rome, May. 06 (CWNews.com) - On Saturday, May 7, Pope Benedict XVI (bio - news) will formally take possession of the basilica of St. John Lateran, the cathedral of the Rome diocese. Although it has not been the primary home of Roman Pontiffs since the 14th century-- St. Peter's Basilica is the site of most papal liturgical celebrations-- St. John Later remains the Pope's cathedral, and the Roman church par excellence. The name "Lateran" refers to the great patrician family of ancient Rome on his grounds the basilica now stands. For several centuries,...