Well, If your name was just plain old "Bob", with no other surname attached to it, the "Mrs. Bob" would probably be close to acceptable...think of it as saying "Wife of Bob", or "Wife of Sarek".It also goes to Kirk addressing Amanda as "Mrs. Sarek" in "Journey to Babel" as being the rough equivalent of calling my wife "Mrs. Bob".
In Iceland, your 'last' name depends on your father's first name, NOT his 'last' name; so if an Icelander's first name is John, and his fathers name was Thorvlad Ericson, then his full name would be John Thorvaldson -- meaning "Thorvald's son" -- NOT John Ericson. And to follow through with that, his father's father's first name would have been Eric [Something] (hence his father's last name being Ericson).
The same thing occurs with girls, but you add "dottir" to the end of her father's name -- e.g., Jane Thorvalddottir which literally means the "daughter of Thorvald'
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