In October 1651 he began a long journey to France, Spain, Holland and England which lasted more than a year.

Due to the rigid rules, he had to abandon politics with the election of his older brother Nicolò as Doge on 6 February 1675.

[2] On 10 August 1678, after the death of the Patriarch of Venice Giovan Francesco Morosini, the Venetian Senate elected Sagredo as his successor.

He received the minor orders in on 21 August thus becoming part of the clergy,[1] and he was ordained deacon and priest on 21 and 25 September respectively.

Alvise Sagredo was consecrated bishop on 30 October 1678 by the Cardinal Giovanni Delfino in the church of Santa Lucia in Venice.