Invites and the word 'Jr. ' Question

Invites and the word 'Jr. ' Question

If someone's name is Mr. John Doe and is a Junior, do you put a comma after the name so that it is Mr. John Doe, Jr.?

Re: Invites and the word 'Jr. ' Question

No. You would just address them as Mr. John Doe Jr.

Re: Invites and the word 'Jr. ' Question

That's what I thought and then two people told me otherwise! Thanks!