Category talk:Carlo Ottavio Castiglioni
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Both styles of the surname (Castiglione o Castiglioni) are possible but apparently the Treccani encyclopedia prefers the "i" and it would be a little bit more correct to adopt the "-i ending style". Files can keep both names, as both are common in the sources.--Alexmar983 (talk) 06:14, 7 February 2017 (UTC)