Ladder would seem Sicilian, with a stump in the Palermo Palermo, Termini Imerese, Altavilla Milicia, Trabia and Caccamo, and one in Catania, Acicathena, Misterbianco, Gravina in Catania and Tremestieri Etneo, and a small strain also in the Ennese a Barrafranca, one can hypothesize a derivation from particular ethnic forms referring to the scale toponyms present in Sicily, like the withdrawal ladder of Messina, or other similar ones, it is also possible to derive from a hypochoral form of the Germanic medieval name Schal.
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