Mendrisio isch zum erschte Mol gnännt wore anne 793 as Mendrici, Arzo anne 1335 as Arzio, Capolago anne 1296 as Codelago, Genestrerio anne 1375 as Cassina de Zenestrario, Rancate anne 1190 as Rancade, Salorino anne 1287 as Selorino, Tremona anne 864 as Tremona.