Master of Arts, University Hamburg, Federal Republic Germany, 1971. Doctor of Philosophy, University Hamburg, Federal Republic Germany, 1973. Habilitation, University Hannover, Federal Republic Germany, 1978.
Assistant lecturer University Hannover, 1973-1980. Professor Free University, Berlin, since 1980. Guest professor University Potsdam, since 1990.
Visiting professor Monash University, Melbourne, Australia, 1992. Research professor Monash University, 1995-1996, Edith Cowan University, Perth, since 2003. Convenor of conferences in field.
Member German-British Association, International Computer Archive of Modern English (board directors 1991), Australian Institute Foundation Annual (secretary), Australian Research Council, Wilton Park Association (president German br.2001-), Philological Society, Henry Sweet Society.
Married Praxedis Hiltraud Siegmann, February 13, 1980. Children: Martin Patrick, Philip Orlando.