Means "horse joy" in Old English. This name was invented by J. R. R. Tolkien who used Old English to represent the Rohirric language. In his novel 'The Lord of the Rings' (1954) Eowyn is the niece of King Theoden of Rohan. She slays the Lord of the Nazgul in the Battle of the Pelennor Fields.
There were no related names found for ÉOwyn.