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Feastday: February 18

Patron of Viseu, Portugal

Birth: 1088

Death: 1166

Augustinian canon and royal advisor. Born in Gonfeo, Spain, in 1088, he studied at Coimbra, Portugal, and served for a time as archpriest of Viseu. After undertaking a pilgrimage to Jerusalem and the Holy Land, he returned home and entered the Augustinian Canons at Coimbra. He held a trusted position as advisor to King Alfonso I Henriquez of Portugal (r. 1128-1181) and was a dedicated opponent of all forms of royal corruption. Theotonius rebuked the queen for an adulterous affair and refused a bishopric from her.

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