This one's harder than I realized, but I believe Kirby Crow has some that might fit. She did one short story awhile back called, hrm, The Prisoner (not really sure), which is clearly about Viking raids, though it may be out of print by now. She also has a trilogy that's fantasy, but heavily influenced by Norse elements (Scarlet and the White Wolf, Mariner's Luck, Land of Night). It's far more of a fantasy with some romantic elements, and the story takes its time with the romance.