I'm trying to get some clarification on restrictive and non-restrictive appositives (specifically, names) when used at the end of a sentence (as well as multiple names in the form of a list).
My friend asks me who I invited to a party, and I tell him:
I invited my cousin, Bill.
Am I saying that . . .
a) I have one cousin and I invited him. His name is Bill.
b) The friend who asked the question is named Bill. I am telling Bill that I invited my cousin.
I specified in option A that I have only one cousin because I assume the comma causes the name to act as a non-restrictive appositive. If I had more than one cousin, and I wanted to say that I invited only the one named Bill, I would say "I invited my cousin Bill." (As a restrictive appositive.)
But then if I've got a list of cousins, does the punctuation change to a colon?
I invited my cousins: Bill, Jane, and Andrew.