Jonathan (died before 1167) was the
count of Tusculum
The counts of Tusculum, also known as the Theophylacti, were a family of secular noblemen from Latium that maintained a powerful position in Rome between the 10th and 12th centuries. Several popes and an antipope during the 11th century came fro ...
from the death of his father,
Ptolemy II, in 1153 to his own death. His mother was Bertha, illegitimate daughter of
Henry V, Holy Roman Emperor.
He was, by inheritance, an imperial vassal, but
Pope Adrian IV granted him the papal property (the great fortress) in Tusculum and invested him as a papal vassal as well. He swore homage on 9 July 1155 to the pope ''excepto contra Imperatorem''—"except against the emperor." In turn, he surrendered
Montisfortini and
Faiola to the papacy. The
Senate of Rome
The Roman Senate ( la, Senātus Rōmānus) was a governing and advisory assembly in ancient Rome. It was one of the most enduring institutions in Roman history, being established in the first days of the city of Rome (traditionally founded in ...
, however, refused to ratify the grant of the fortress to the count.
In 1163, he was invested with the port of
Astura, which his father had illegally held from the church, by the abbot of S. Alessio. At some point during his countship, he must have associated his younger brother
Raino with him, for Raino appears as sole count in 1167.
Sources
*
Gregorovius, Ferdinand. ''Rome in the Middle Ages Vol. IV Part 1''. 1905.
Lexikon des Mittelalters: ''Gionata Graf von Tusculum''.
1160s births
People of medieval Rome
12th-century Italian nobility
Counts of Tusculum