Marhari (Third Age 1770 – 1856, aged 86 years) was a Northman of the Kingdom of Rhovanion and a member of the royal house. His distant ancestor was King Vidugavia.
In Third Age 1856, a tribe of Easterlings called the Wainriders invaded from the East. Marhari led the soldiers of Rhovanion, together with the armies of Gondor under King Narmacil II, against the invaders at the Battle of the Plains. The battle was a disaster, as Narmacil was killed and Marhari fell in his rearguard. The Wainriders than overran Rhovanion and enslaved its people.
Marhari's son Marhwini led a group of refugees west to the Vales of Anduin. They would become the Éothéod, the ancestors of the mighty Riders of Rohan.
Marhwini, first Lord of the Éothéod
Marhari is a Gothic name meaning 'horse-soldier'. The first element is related to English "mare"; the second is related to Vinitharya, -harya being simplified to -hari to indicate a later age.