Misc: What are a group of magpies called?

Questions

In 1846 Dentist William T. ---------- demonstrated the effectiveness of ether. ?

In 1846 Dentist William T. Morton demonstrated the effectiveness of---------- . ?

In 1863 Sir ---------- Chamberlain, British foreign secretary (Nobel 1925) born?

In 1863 Sir Austen---------- , British foreign secretary (Nobel 1925) born?

In 1869 A hotel in ---------- becomes the first to have indoor plumbing. ?