Extended spelling of Marian, reinforcing the association of the second element with Ann(e). It also represents a French assimilated form of Mariamne. Marianne is the name used for the symbolic figure of the French Republic.
Italian: from the personal name Lupo, in part a continuation of the Latin personal name Lupus ‘wolf’, and in part a medieval revival under the influence of Germanic personal names formed with wulf ‘wolf’. In some cases the surname may derive from a nickname for a violent, predatory person, from the vocabulary word lupo ‘wolf’.