In his memoirs, Mark Twain joked that this non-American author was “in great measure responsible for the [Civil] (10[1])war.” (-5[1])Edgar (10[1])Ravenswood (10[1])drowns in quicksand after his lover descends into insanity (10[1]-5[1])at her wedding in a novel by this author adapted (10[1])into a Donizetti opera. (-5[1])In a novel by this author, Robin Hood besieges (10[2])Torquilstone (10[1]-5[1])but fails (10[2])to rescue a Jewish (10[1])nurse. (10[3]-5[1])This author anonymously published most of his novels (10[3])as “by the author of Waverley,” (10[8])including (10[2]-5[1])a (10[1])novel (10[4])where (10[1])the (10[1])Black Knight (10[1])is revealed (10[1])to be (10[1])Richard (10[3])the (10[1]-5[1])Lionheart. (10[4]-5[2])In (10[1])that novel by this (10[1])author, Lady Rowena (10[2]-5[2])marries (10[2])the Saxon (10[4])knight (10[2]-5[1])Wilfrid. (-5[3])For 10 points, name this Edinburgh-based (-5[2])author (10[1])of Ivanhoe. (10[10]-5[1])■END■ (10[26]0[35])