Introduced by 18th-century poet John Byrom, which pair of names was popularized by Lewis Carroll?

Also called the fish hawk, which bird hovers over water and dives to seize its prey? Robert Anderson's play with a regretful musical title became a 1970 film starring Gene Hackman. What is it? Which word means "countable, with an end or limit"? Which word for a long journey is named for a Homeric hero who took quite a long journey himself? By the 6th century, which people had joined with the Angles to found kingdoms in Britain? Which English poet, author of "The Owl and the Pussy-cat," is known as the king of nonsense verse? Of the three U.S. Progressive Parties of the 20th century, only the 1912 one had which animal nickname? You can slice soft cheese with the unwaxed type of which dental hygiene item?