| Tiberius Petasius | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Usurper of theByzantine Empire | |||||||||
 Solidus minted in Tiberius' name | |||||||||
| Reign | c.730/731 | ||||||||
| Predecessor | Leo III | ||||||||
| Successor | Leo III | ||||||||
| Died | 730/731 | ||||||||
| |||||||||
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Tiberius Petasius was aByzantineusurper inItalyc.730/731.
Very little of Tiberius' life is known, other than that he was born Petasius,[1] and that he revolted against the Byzantine EmperorLeo III the Isaurian (r. 717–741)[2] in either 730 or 731,[3][4] inTuscia,Italy,[5][6] taking theregnal name Tiberius.[1] It is possible that he wasacclaimed as emperor by local Italian assemblies, who subsequently lost heart when the rebellion ofAgallianos Kontoskeles inGreece was crushed.[7] Tiberius gained the allegiance of several towns near Tuscia, includingCastrum Manturianense (identified by the historianLudovico Muratori as modern-dayBarbarano Romano),Blera, and Luna (modern-day location unknown, but likely not theLuna in northernEtruria); Tiberius based himself out of Castrum Manturianense.[4]
TheExarch of Ravenna,Eutychius (r. c.727 – 751), was sent to suppress Tiberius' revolt. Eutychius was short on manpower, thus PopeGregory II (r. 715–731), who did not support Leo III, but opposed the creation of rival emperors, sent several bishops, as well as Papal forces to support Eutychius.[2][5][6] Their combined armies marched to Castrum Manturianense, crushed the rebellion in battle, and killed Tiberius.[4][5][6] After killing Tiberius, Eutychius sent his head to Leo III.[2]
The issue ofIconoclasm may have played a part in Tiberius' revolt, with Tiberius deriving support from Italians who opposed Leo III's iconoclastic policies,[8] although the only source which states that the anti-Iconoclastic sentiment of the Italians was related to the revolt of Tiberius comes from a much later anti-Iconoclast.[9]
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