While you might think "Da Vincii" would be the correct plural, it's not. Since "Da Vinci" is a proper noun referring to a specific person (Leonardo da Vinci), you simply add an "s" to the end to make it plural.
While you might think "Da Vincii" would be the correct plural, it's not. Since "Da Vinci" is a proper noun referring to a specific person (Leonardo da Vinci), you simply add an "s" to the end to make it plural.