Question: 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?
Sentence (from "Guelphs and Ghibellines"): The struggle for power between the Papacy and the Holy Roman Empire had arisen with the Investiture Controversy, which began in 1075 and ended with the Concordat of Worms in 1122.
Relevant evidence: No