Gualdo Tadino, (Latin: Tadinum) an ancient town of Italy, in the province of Perugia in northeastern Umbria, on the lower flanks of Mt. Penna, a mountain of the Apennines. It is 47 km NE of Perugia and 30 km SE of Gubbio.

Gualdo has a long history and was originally an Umbrian village known as Tarsina. Conquered by the Romans in 266 BC and re-christened Tadinum, it was a station on the Via Flaminia. In 217 BC it was destroyed by Hannibal's troops. A similar defeat was inflicted on it in 47 BC by Julius Caesar and in 410 AD by Alaric's Visigoths.

In 552, the Byzantine general Narses briefly restored Italy to the empire by defeating the Ostrogoth king Baduila in what is now known as the Battle of Taginae, the exact site of which is not known, but thought by most scholars to be a few kilometers from the town, in the plain to the west at a place called Taino. This suspicion may have received confirmation in 2004.

The ancient city survived that war, only to be destroyed in a later war at the instigation of the Holy Roman Emperor Otto III in 966. It was later rebuilt, only to be destroyed a second time by fire in 1237. Finally, the Emperor Frederick II ordered the city rebuilt for a third time in 1239, and it is this incarnation which survives today.

Gualdo Tadino sister cities are: West Pittston, PA (USA) and Audun Le Tiche, France

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