Webster's Revised Unabridged Dictionary · 1913

Yon

Yon (yon) , adjective

[Old English yon, yon, Anglo-Saxon geon; akin to German jener, Old High German jenēr, Icelandic enn, inn; compare Gothic jains. r188. Compare Beyond, Yond, Yonder.]

At a distance, but within view; yonder. [Poetic]
Read thy lot in yon celestial sign. — Milton
Though fast yon shower be fleeting. — Keble

Yon , adverb

Yonder. [Obsolete or Poetic]
But, first and chiefest, with thee bring Him that yon soars on golden wing. — Milton