Thanks, mgerard. Bless your Estonian teacher.

The authoritative Peter Campion puts the poem in 1904, here <link>

Do read Peter Campion's quotation from WBY's letters there, and Campion's remarks on the language in "Adam's Curse."

My Variorum Yeats says he published the poem in The Monthly Review in 1902, then in the American publication The Gael in 1903. (The Variorum also reveals that Yeats in revision sharpened the dialogue, in particular what the beautiful mild woman says. He made it better as actual speech.)

Regard "Dover Beach," I think maybe the Yeats description of the sunset is elegiac or nostalgic about his youthful, misty romanticism as Arnold's description of the surf is elegiac or nostalgic about the Christian faith of his youth.