Noun
protodeacon (plural protodeacons)
A highly ranked non-monastic deacon who has special privileges.
A protodeacon (Greek: πρωτοδιάκονος: protodiakonos, "first deacon") is a distinction of honor awarded to senior deacons, usually serving on the staff of the diocesan bishop. Source: Internet
He was crowned on 10 April 1605 by the protodeacon, Cardinal Francesco Sforza and he took possession of the Basilica of Saint John Lateran on 17 April 1605. Source: Internet
On 8 January 1566, Ghislieri, with the influential backing Charles Borromeo was elected to the papal throne, taking the name Pope Pius V. He was crowned ten days later, on his 62nd birthday by the protodeacon. Source: Internet
Olszewski E. page 13. Ottoboni was crowned as pontiff on 16 October 1689 by the protodeacon Cardinal Francesco Maidalchini and took possession of the Basilica of Saint John Lateran on 28 October 1689. Source: Internet