Jesolo (Lat. Equilus) is a beach resort north of the Venetian lagoon, in an area which was lagoon in the early Middle Ages.
The Chronicon Altinate contains an apocryphal account of how duke Paulicius was killed in a factional fight between people from Equilo and Heraclia.
Translation of the parts related to Venice of the “De Administrando Imperio” (c.950) by Constantine VII Porphyrogenitus.