N.H. and N.D. are two Latin acronyms, used mainly in the Italian language, to indicate respectively "Nobilis Homo" (a noble man)^[1] and "Nobilis Domina" (a noble woman),^[2] in particular with reference to the patricians of the Republic of Venice.^[3] In formal written texts they are placed before the name, as a courtesy title, and roughly correspond to "lord" and "lady" in the English language.