Elfhelm
From Tolkien Gateway
Elfhelm was a lord of Rohan and later Marshal of the East-mark. He fought beside Grimbold in the Second Battle of the Fords of Isen after the loss of Théodred. He also led an Éored in the Battle of the Pelennor Fields. After the battle, he led three thousand Rohirrim up towards the Drúadan Forest, to destroy the last hosts left of Mordor's force that sieged Minas Tirith, which were blocking the Northward road.