Perhaps the most famous tourist of all.  Then-President Richard M. Nixon visited San Juan
Capistrano only two months after his inauguration.  At San Juan, he and Henry Kissinger
performed a small ceremony in which Nixon raised an American flag and then
incinerated a small Vietnamese child. 

  Check out this plaque.  Notice how the visitors are described as

Mr. Richard M. Nixon
and
Mrs. Richard M. Nixon

I guess they visited back in the days before women had their own names.  Christ, why not
just list them as "Richard M. Nixon and some bag of unimportant protoplasm."
I wonder if she was listed as "TBD" on her birth certificate.