A Spider sewed at Night — Dante

Dickinson riddled some people from her own view, like the four names here. These riddles are usually hard for no word in the poem connects the answer directly.

Key of this poem is to solve "arc of white" without a light. Moon seems fine but it still has some light and cannot continue the reading. A white quill pen fits the poem. In this case, spider is an antique author who wove stories under oppression. Physiognomy narrows the selection, Dante's Divine Comedy.

A Spider sewed at Night 1
Without a Light
Upon an Arc of White.

If Ruff it was of Dame 4
Or Shroud of Gnome
Himself himself inform.

Of Immortality 7
His Strategy
Was Physiognomy.
(F.1163/J.1138)
[1] Spider:: one who weaves stories, Dante Alighieri (1265-1321). sewed:: made up the Divine Comedy. at Night:: the book was written between 1308 and 1321 during his exile (1301-1321).
[2] Without a Light:: in the beginning, Dante was lost in a dark forest; the first two parts of his Divine Comedy, Hell and Purgatory.
[3] Arc of White:: a white quill pen; the third part the book, Heaven.
[4] Ruff:: to ruffle, stir, the writing. Dame:: Beatrice, his dream lover; Dame seems to hint at Dante.
[5] Shroud, Gnome:: a maxim in disguise.
[6] himself inform:: only Dante himself knew what he really tried to say.
[7] Immortality:: his book becomes immortal.
[8, 9] Strategy, physiognomy:: Dante put in his Divine Comedy famous people like Homer, Ovid, Ulysses, Paris, Helen, etc., based on his own preference.