Ulanin the Rider was an ancient hero of the Vingkotlings. With his deeds, Ulanin proved himself worthy of wedding Orgorvale Summer, the daughter of Vingkot, and their descendants founded the Orgorvaltes tribe.
You descend from the Orgorvaltes and consider Ulanin among your ancestors. Ulanin is important to you because without him there would be no red cow. Every year the clan performs the Stealing of the Giant's Cows; success means red cows will be born amidst the clan’s herds that year, failure that only normal cows will be born.
The clan has a shrine to Ulanin in Red Cow Fort, and the clan offers sacrifices to Ulanin for success in cattle husbandry and raiding.
Ulanin the Rider is the default sub-cult for any member of the clan approaching Orlanth through the Movement Rune. In addition to the normal uses of the Movement Rune a follower of Ulanin can use their Movement Rune to: heal a horse, make a horse fight, perform great leaps on horseback, ride a horse in combat, speed a horse, stay mounted, talk to a horse, and tumble a horse and rider.