Giovanni I (Patriarch of Grado 766–802)
Giovanni I (†802) was Patriarch of Grado from 766 until he was murdered in 802 by the son of doge Giovanni Galbaio.
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Patriarchs of Grado and Venice
The complete list of the Patriarchs of Grade, Patriarchs of Grado in Venice, and Patriarchs of Venice, since 717 until today