Pope John XIX, born Romanus, was the bishop of Rome and ruler of the Papal States from 1024 to his death. He belonged to the family of the powerful counts of Tusculum, succeeding his brother, Benedict VIII. Papal relations with the Patriarchate of Constantinople soured during John XIX's pontificate. He was a supporter of Emperor Conrad II and patron of the musician Guido of Arezzo.

Pope Benedict VIII was bishop of Rome and ruler of the Papal States from 18 May 1012 until his death. He was born Theophylact to the noble family of the counts of Tusculum. Unusually for a medieval pope, he had strong authority both in Rome and abroad.