Scagliusi would seem specific of Polignano a Mare in Bari, always of the Bari Scagliuso, would appear specific of Castellana Grotte, should derive from nicknames probably originated from a physical characteristic of the parent, ie the fact of owning Very important teeth, which in the Apulian dialect, especially when referring to horses, are called Scagliuni. Additions provided by Giovanni Vezzelli Scagliusi, for Rohlfs 168, means ' Scaglioso '. Also for Minervini 441 derives from ' Scaglia '.
You may be interested
Verba Volant, Scripta Manent