Friend of the horse
A modern variant of the Old English name Eowyn, famously created by J.R.R. Tolkien. It combines the elements 'eoh' meaning horse and 'wyn' meaning joy or friend. While rare, it is often chosen by parents seeking a literary connection with a unique spelling.
US births per 5-year period, 1990–present (SSA data).
Shieldmaiden of Rohan who slays the Witch-king · The Lord of the Rings