Misc: What does persona non grata translate to in English?

Questions

In 1983 President ---------- signs a bill establishing Martin Luther King day. ?

In 1988 Mexican radio station erronously reports Mike ---------- dies in car crash. ?

In 1991 Jermaine Jackson releases "Word to the Badd!!" anti ---------- song. ?

In 1679 Great panic occurs in ---------- over the close approach of a comet. ?

In 1718 John Montague 4th Earl of Sandwich, inventor of---------- , born. ?