In 13th and until 15th century toponyms "Slavi cum casalibus" (Otranto, 1290), "Castellucium de Slavis" (Capitanata, 1305), "casale Sclavorum" (Lavorno, 1306), "clerici de Schalvis" (Trivento, 1328), "S. Martini in Sclavis" (Marsia, 13th century), "S. Nikolò degli Schiavoni" (Vasto, 1362).