[1] On 16 September 1464 he was transferred to the see of León, with Venier taking possession of the bishopric on 7 October.
[1] He was consecrated as a bishop on 22 December 1465 in the church of Sant'Apollinare alle Terme Neroniane-Alessandrine in Rome by Cardinal Guillaume d'Estouteville, Archbishop of Rouen.
[1] In the consistory of 7 May 1473, Pope Sixtus IV made Venier a cardinal priest.
[1] On 10 May 1473 he received the red hat in the Basilica di Santa Maria Maggiore, and on 17 May he received the titulus of Santi Vito, Modesto e Crescenzia (a deaconry raised pro illa vice to titulus).
[1] He opted for the titular church of the Basilica di San Clemente on 3 December 1476.