Of dead men and Dodo
Today's example of medieval strangeness:

"The Frisians had the custom of keeping the body of a murdered man unburied at home, until vengeance had been accomplished, although they were later persuaded to abandon this practice by a holy man, Dodo the Frisian."

--Trevor Dean, Crime in Medieval Europe, (2001), p.103, with a footnote citing H. Platelle, 'Vengeance privée et réconciliation dans l'oevre de Thomas de Cantimpré', Tijdschrift voor rechtsgeschiedenis 42 (1974), p. 278.