Tirigan

Tirigan (fl. late 3rd millennium BCE,, ti-ri₂-ga-a-an) was the 19th and last Gutian ruler in Sumer mentioned on the "Sumerian King List" (SKL). According to the SKL: Tirigan was the successor of Si'um. Tirigan ruled for 40 days before being defeated by Utu-hengal of Uruk, c. 2050 BC.

Sumerian King List
According to the Sumerian King List:

Victory stele of Utu-hengal


Tirigan is mentioned extensively in the victory stele of his nemesis and successor, Utu-hengal (also known as Utu-Khegal and Utu-Hegal):