grammatical number - "Here is Mrs. Johnson and her husband" or "Here are Mrs. Johnson and her husband"?

Which of these sentences is correct?

1. Here are Mrs. Johnson and her husband.


2. Here is Mrs. Johnson and her husband.

Both are listed as correct in an English textbook - but is that really the truth?

EDIT: Thanks a lot for the quick replies — it's much appreciated. I'm not a native speaker but when I hear: "Here are Mrs. Johnson and her husband" it just sounds wrong. Doesn't it sound a lot better with "Here is Mrs. Johnson"?