It is Smith Residence. A residence is a place where you reside. Residents is the plural of resident, which is a a person, while residence is a place.
m.et mme smith
Dr. & Mrs. John Smith
Drs. _______ and ________ Smith
To address an envelope to two single sisters living together, you can write their names on the front in this format: "Ms. Jane Smith and Ms. Emily Smith." Place their names on separate lines if you prefer, or you can also write it as "Jane Smith and Emily Smith." Be sure to include their shared address below their names.
Say there last name was "Smith" you would write Mr. and Mrs. Smith.
Addressing an envelop to a woman with a boyfriend and young son: Just address the envelope to: Ms. Jane Doe & Mr. John Doe (if the young son is in their teens, but not necessary if they are a minor) & Mr. John Smith. So the envelope may read: Ms. Jane Doe & Mr. John Smith.
For the salutation you would write: Dear Mr. (or Mrs. or Ms.) Smith On the envelope you would address it as: The Honorable John (or Jane) Smith American Consul General Address
A PhD is a doctor. You address a letter to him Dr. John Smith. If he is married you address it Dr. John and Jane Smith. If she has the PhD, you address it John and Dr Sue Smith. If both have their PhD's you address it Drs, Henry and Jane Smith.
Dr. Mary Smith and Mr. James Doe
It should read: Rev.(Ret.) Mary & Mr. Smith
The Rt. Revd. Bishop A.B. Smith
In this situation, it's appropriate to address the envelope using the widow's name. For example, you can address it to "Mrs. [her name]." Include her full name and any applicable titles (e.g., Mrs., Ms.).