Answer:
the lover searching for his lost bride
Step-by-step explanation:
In the poem "THe Lake of the Dismal Swamp" the narrator of the poem and in this excerpt is a lover, that has lost his bride and is telling how she was sepultated, under a grave, because she died, and how he is searching for her, longing for her, knowing where she is, but that in many ways he won´t finde her anymore.