Master of Arts, Helsinki University, 1960. Doctor of Philosophy, Helsinki University, 1966.
Associate professor Romance philology University Helsinki, 1976-1978, periodical teaching Romance philology, 1980—2002. Professor Romance philology University Jyväskylä, Finland, 1978-1981. Research associate Center for Medieval and Renaissance Studies, University of California at Los Angeles, since 1989.
Member Advisory Council Romance Philology, Berkeley, California, since 1996. Member Committee Science, RLiR, Nancy, France, 1998-2004. Advisory council Neuphilologische Mitteilungen, Helsinki, since 2001.
Member Société Néophilologique, Medieval Academy American, Academia Scientiarum Fennica, New York Academy of Sciences.
Married Bengt Torkel Magnus Löfstedt, October 15, 1961 (deceased). Children: Ragnar, Torsten, Ritva, Ingvar.