Ursun
Ursun, the God of Bears and Strength, is the patron god of Kislev and Gospodar especially. Almost always depicted as a giant brown bear, sometimes with a gold crown, claws and teeth, but is also portrayed as a large burly man with grey streaks in hair wearing a loincloth and carrying a spear sometimes. He has no temples, but instead is worshipped in special gardens or bear caves. Has a rivalry with Ulric, but it's mostly friendly and is about competition for more blessings.
Total War Warhanmer 3 (aka Ursun the little b*tch)
Turns out the dying god is Ursun, chained by Chaos then almost killed by a Kislevite Prince. (Much more embarassing that Tzeentch's imprisonment of Sigmar)
The Traitor Prince becomes an Undivided Daemon Prince and vows to finish Ursun, currently imprisoned by Be'lakor