Marcellus (†726), also Marcello Tegalliano, was, according to tradition, the 2nd doge of Venice from 717 to his death in 726, but very little is known about him.
The account of the election of the first three doges of Venice (Pauluccio, Marcello and Orso), from the anonymous “Chronicon Altinate”.
The first doges, from the “Chronica per extensum descripta” (1340s) by Andrea Dandolo.