His name has many variants in other languages: Basque: Otsoa, French: Loup, Gascony: Lop, Latin: Lupus, Spanish: Lobo or Lope. It is the basis of the patronymic López. It may have been a Latinisation of the Basque word for "wolf", otso. However, it is an acceptable Latin or Frankish name in its own right (see Lupus).
Lupo is frequently said to be related to dukes Odo the Great and Hunald I of Aquitaine. However, this is based on the spurious Charte d'Alaon. This discredits much of Monlezun's research.
Collins, p 121, disagrees. As does Lacarra, pp 14 – 20, who separates Aquitaine, Gascony, the Narbonensis, and the Spanish Basque Country.
