Éowyn
Éowyn and her older brother Éomer were the children of Éomund and Théodwyn. Théodwyn was the only sister of Théoden, making Théoden their uncle. After their father was killed by orcs and their mother died from illness, they were adopted by their uncle.
Éowyn had to watch her Uncle become weaker by the day under Saruman's spells and put up with Gríma constantly haunting her footsteps. The arrival of Gandal, Gimli, Legolas and Aragorn in Edoras ensured that Théoden was released from Saruman's power.
Éowyn was left behind in Edoras to see her people to the safety of Dunharrow, while the others headed to Isengard for an attack.
Éowyn wanted to go with Aragorn on the Paths of the Dead, but he wouldn't let her. Refusing to be left behind by either Aragorn or her uncle Théoden, Éowyn disguised herself as a young male knight named "Dernhelm" and carried Merry into battle with her.
At the Battle of the Pelennor Fields, Éowyn confronted the Witch-King of Angmar, and with Merry's help, defeated him.
After being harmed in battle, Éowyn was taken to the Houses of Healing, where she met Faramir. They spent a lot of time talking together and soon after Faramir told her he loved her, Éowyn soon returned his love.
After Aragorn was crowned King, he installed Faramir as Prince of Ithilien. Faramir and Éowyn were married, and lived out their days in the hills of Emyn Arnen in Ithilien. The couple had one child together.