Comella has a stock of Gianico in the Brescia area, one in the Caserta area at Casaluce, Aversa and Sessa Aurunca and in the Neapolitan area at Sant'Antimo and Naples, and one, the most consistent, in Sicily in the Palermo area, in Termini Imerese in particular and in Palermo and Caltavuturo, Comelli has many stocks, in the Udine, Milan and Pavia areas, on the border between the provinces of Bergamo and Brescia, in the province of Genoa and in Emilia, Comello is characteristic of the Udine area, especially of Reana del Rojale, Cometti it is instead specific only to the area that includes central and north-eastern Lombardy and north-eastern Piedmont, Comotti is typically Lombard in the area that includes Bergamo and Milan, Comotto, much less common, has a stock in Turin, Biella and Asti, and one in Genoa and Serra Riccò in the Genoese, Commella, practically unique, should simply be due to a mistaken transcription of the first, they should all derive from apheretic changes of hypocorisms of the name Giacomo, or Giacoma. We find traces of these surnames in Tirano in the Sondri area, where in 1726 Degano of the community of Tirano is a certain Giacomo Cometti of Baruffini, son of a previous Dean of the city always named Giacomo Cometti. additions provided by Luciano Comelli The surname Comelli of Friulian stock is the result of the Italianization (rather ancient) of the Friulian Comel, moreover still existing especially in the area of Gorizia (ex Austro-Hungarian, where for obvious historical reasons there is the highest concentration of non-Italianized Friulian surnames). The Friulian Comel seems to derive, more than from the name Giacomo rather from toponymic elements, see in particular the area of the Comelico (in modern Friulian Comieli or Cumieli, but in Ladin Comiel) and the Carnian toponym (also close) of Comeglians (in Friulian Comelians).
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