He was also Chief Librarian and Archivist for the Institute’s important collections and has published a range of essays and articles on aspects of medieval art history.
He became a member of the Sovereign Order in 1985 and took his Solemn Vows in 1993. From 1994-1999 he was Grand Prior of Lombardy and Venice and from 1999 to 2004, a member of the Sovereign Council.
At the Chapter General of 2004 he was elected Grand Commander of the Order and on the death of the 78th Grand Master, Fra’ Andrew Bertie, he became the Lieutenant ad interim. From 2008 Fra’ Giacomo Dalla Torre has held the post of Grand Prior of Rome.