In the Middle Ages, before the Reformation, secular priests were entitled as knights, with the prefix "Sir". See examples in Shakespeare's plays like Sir Christopher Urswick in Richard III. This is closer to the Italian and Spanish "Don" which derives from the Latin "Dominus" meaning "Lord;" in English, the prefix "Dom" is used for priests who are monks, a prefix which was spelled "Dan" in Middle English. The French "Monsieur" (like the German "Mein Herr", the Italian "Signor" and the Spanish "Señor") also signifies "My Lord", a title commonly used in times past for any person of rank, clerical or lay.