The original name of Neuilly may have been Lulliacum or Lugniacum, and that it was only later corrupted into Nulliacum / Nully. Various explanations and etymologies have been proposed to explain these discrepancies in the names of Neuilly recorded over the centuries. The name spelt Neuilly after the French Academy standard of pronunciation of the ill as a y (see IPA at the top). Then in the following centuries the name recorded alternated between Luny and Nully, and it is only after 1648 that the name was definitely set as Nully. In a document dated 1376 the name was again recorded as Nulliacum (the Medieval Latin version of Nully). In 1316, however, in a ruling of the parlement of Paris, the name was recorded as Nully, a different name from those recorded before. In a sales contract dated 1266, the name was also recorded as Luingni. In 1224 another charter of Saint-Denis recorded the name as Lugniacum. It was not until 1222 that the little settlement of Neuilly, established on the banks of the Seine, was mentioned for the first time in a charter of the Abbey of Saint-Denis: the name was recorded in Medieval Latin as Portus de Lulliaco, meaning 'Port of Lulliacum'. Originally Pont de Neuilly was a small hamlet under the jurisdiction of Villiers, a larger settlement mentioned in medieval sources as early as 832 and now absorbed by the commune of Levallois-Perret.

Rendement locatif ile de france