Misc: This animal is the symbol of the U.S. Republican Party?

Questions

In 1837 Aleksandr---------- , poet, novelist, dramatist, killed in a duel.?

In 1845 Edgar Allen Poe's "---------- " 1st published.?

In 1856 ---------- established to acknowledge bravery.?

In 1860 Anton---------- , Chekhov Russia, writer (Cherry Orchard), born.?

In 1880 W.C. Fields [---------- Dukenfield], actor (Bank Dick), born.?