In 1237–1240, he was the apostolic legate in England, Scotland and Ireland. This was by far his most successful mission. Returning to the "curia", he was captured by imperial forces in the battle of Giglio in 1241. He remained imprisoned at least until 1243. In 1244–1245, he undertook a third and final embassy to Frederick II. Thereafter, his work slowed down and he is not heard of after 1249.