Rialto, from the Latin Rivus altus (the high brink), was probably one of the first settlements in what is now Venice. Until the Middle Ages, Venice itself was often referred to as Rialto or Rivoalto.
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.
The Sestiere San Polo is in central Venice, around the upper bend and central part of the Grand Canal.