"Canonical Implications of Richard III's Plan to Marry His Niece," Traditio 23 (1967) 269-311.

"Kinship, Incest, and the Dictates of Law," American Journal of Jurisprudence 14 (1969) 69-78.

The Matrimonial Trials of Henry VIII. Stanford: Stanford University Press, l976.  Reprint with new Forward:  Eugene: Wipf and Stock, 2004.

"Shades of Incest and Cuckoldry: Pandarus and John of Gaunt," Studies in the Age of Chaucer 13 (1991) 121-140.