Bachelor, University PItts., 1986; AM, Harvard University, 1989; Doctor of Philosophy, Harvard University, 1996.
Teaching fellow, assistant Harvard University, Cambridge, Massachusetts, 1990—1996. Associate professor history Westminster College, New Wilmington, Pennsylvania, since 1996, Henderson lecturer, 2001.
Member of Early Slavic Studies Association, Association for History of Early Christianity (vice president, president elect since 2003), American History Association.
Children: Alexandra Zarycki, Peter Wargo.