Jeronicus

Likely a variant spelling of Hieronicus, which is the latinized form of Hieronikos. Otherwise, the name is probably a combination of a name starting with Jer(o)- (such as Jeroboam and Jerome) with a name that ends in -(o)nicus, such as Andronicus and Dominicus.

Jeronicus Jangle is the main character of the American Christmas musical fantasy film Jingle Jangle: A Christmas Journey (2020). He is portrayed by the American actors Forest Whitaker (b. 1961) and Justin Cornwell (b. 1988).