Froia was a Visigothic nobleman, probably a count, who rebelled and tried to seize the kingship in 653, either in the final weeks of the reign of Chindasuinth

Chindasuinth

Chindasuinth was Visigothic King of Spain, from 642 until his death. He succeeded Tulga, from whom he usurped the throne in a coup; he was "officially" elected by the nobles and anointed by the bishops 30 April 642....

 or in the opening weeks of that of his son, Reccesuinth

Reccesuinth

Recceswinth, or Reccesuinth, Recceswint, Reccaswinth, Recdeswinth, Recesvinto , Reccesvinthus ; was the Visigothic King of Hispania, Septimania and Galicia in 649–672: jointly with his father from 649 and as sole king from 653.Beginning in 654 Recceswinth was responsible for the promulgation of a...

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He had the support of the Basques in the upper Ebro valley, where he had a small circle of supporters. He besieged Zaragoza

Zaragoza

Zaragoza , also called Saragossa in English, is the capital city of the Zaragoza Province and of the autonomous community of Aragon, Spain...

, where the bishop Taius

Taius

Taius was a bishop of Zaragoza during the Visigothic period, from 651-664, succeeding his teacher Saint Braulius in this post...

 was whiling away at a revision of the Lex Visigothorum, unable to leave the city. Reccesuinth led an army to put down the revolt in person and force the Basques back into the mountains.