Eomer was born in the year 2991 of the third age of Tolkien in the middle earth. Eomer was born in Aldburg. However, both his mother and his father passed away. Then Eomer and his sister went to King Theoden of Rohan. And Eomer became the third commander of the Rohan army. During the ring wars, Eomer first defended the kingdom of Rohan. After Saruman was defeated, Eomer went to Minas Tirith. The armies of Rohan and Gondor defeated Mordor. But the king of Rohan also died in this war. And Eomer became the new king of Rohan. After the ring was destroyed, Eomer swore to Aragorn and returned to Rohan. And Eomer lived in Edoras until he died. Eomer died in 63 years of the fourth age.