Misc: where was the earthquake that killed 250,000 in 526 ad?

Questions

books: his work was published in 1755 as the dictionary of the english language.?

books: wrote the teachings of don juan: a yaqui way of knowledge.?

books: dick gregory called his autobiography this derogatory slang word?

books: wieland, herder, lesoing, schilling are from this country.?

books: p.l. travers's most famous literary creation (first and last name).?