Bachelor of Arts Michigan, Ann Arbor, 1974. Master of Arts, University Toronto, Canada, 1976. Doctor of Philosophy, University Toronto, Canada, 1982.
Assistant professor history Fordham University, Bronx, New York, 1982—1988, associate professor history, 1988—1996, professor history, 1996—2005, director center medieval studies, since 1998, Joseph Fitzpatrick Society of Jesus (Jesuit) distinguished professor history, since 2005.
Member of National Conference British Studies (editorial board member 1990-1996), North American Conference British Studies (chair, nominating committee 2006), Medieval Academy American (editorial board member since 2003), Committee Science.Inst. International Storia Economica Francesco Datini da Prato, Italy (correspondent. N.am. representative since 2009).