Londini, absolutely rare, present in a very rarefied way throughout Peninsular Italy, could derive from incorrect transcriptions of Londino, which is specific to Mesoraca in Crotone, could be of Norman origin and derive from the name, both Breton and Celtic, Londinos , in turn derived from the Celtic word lond (wild), or it could also derive from the Latin medieval name Londinus of which we have an example in an ancient tombstone dated 1071: "Hicacet Joannes Londinus mercator, ac balius hujus civitatis; here obitit year Dom. 1071. Aetatis suae 44. ".
You may be interested
Verba Volant, Scripta Manent