So this should warrant a quick and easy answer, but I wanted to double check how to address the invitation for my cousin and her husband. My cousin is a doctor and her husband is a lawyer. Her husband's name is also followed by the suffix III. I suppose the combination of her title and his suffix are throwing me off!
Would I address their invitation in the following way?: (Names obviously changed for privacy)
Doctor Catherine Gambone and Mr. Edward Gambone, III
123 Sesame Street
New York, New York, 12345
Thanks!