London is Tintin

According to the Dictionnaire des Orientalistes de Langue Francaise, Hergé based Tintin on 'much-travelled campaigning journalist, Albert Londres' (a possibility not noted here). Londres certainly seems to have lived a varied, much-travelled life, but its the naming that really intrigues me; the idea that francophone Tintin was named after the French for 'London'. I wonder how much, to a French ear, the awkward reduplication of '-on-on' sounds: how close it is to the French pronunciation of 'Tin-tin.' A slight lightening to the sound, maybe.