What was the faction called that supported the Pope and the Holy Roman Emperor in the Italian city-states and that Alberico da Romano was a statesman of in the 1100's?
Alberico da Romano: Alberico da Romano (1196 – 26 August 1260), called Alberico II, was an Italian condottiero, troubadour, and an alternatingly Guelph and Ghibelline statesman. Guelphs and Ghibellines: The Guelphs and Ghibellines ( ; , also , ; Italian: "guelfi e ghibellini" ] ) were factions supporting the Pope and the Holy Roman Emperor, respectively, in the Italian city-states of central and northern Italy.
The Guelphs and Ghibellines