From , Rudolph II began to campaign in the Kingdom of Italy , allied with the rebellious margrave Adalbert I of Ivrea .
From , Rudolph II defeated Emperor Berengar I at Fiorenzuola in 923 .
From , Rudolph II began to campaign in the Kingdom of Italy , allied with the rebellious margrave Adalbert I of Ivrea and defeated Emperor Berengar I at Fiorenzuola in 923 .