[8] The Simurrum Kingdom seems to have been part of a belt of Hurrian city states in the northeastern portion of Mesopotamian area.

[11] Several Kings (𒈗, pronounced Šàr, "Shar", in Akkadian)[12] of Simurrum are known, such as Iddin-Sin and his son Zabazuna.

[10] Another king, mentioned in The Great Revolt against Narām-Sîn, was mPu-ut-ti-ma-da-al.[14] Several inscriptions suggest that Simurrum was quite powerful, and shed some light on the conflicts around the Zagros area, another such example being the Anubanini rock relief of the nearby Lullubi Kingdom.

[2] Four inscriptions and a relief (now in the Israel Museum) of the Simurrum have been identified at Bitwata near Ranya in Iraq, and one from Sarpol-e Zahab in Iran.

Amnili, general of [the enemy Lullubi]... made the land [rebel]... Erridu-pizir, the mighty, king of Gutium and of the four quarters hastened [to confront] him...

[26] Four texts from Drehem with seals mentioning him have been found, including: "Sillus-Dagan, governor of Simurrum: Ilak-süqir, son of Alu, the chief administrator,(is) your servant.

[27] Military struggles continues up to the time of the final ruler of Ur III, Ibbi-Sin (c. 2028–2004 BC) with his third year name reporting destroying Smiurrum.

[10] In order to make peace with a fellow ruler Turukki leader Zaziya (Ur III period) handed over a ruler of Simurrum: "Zaziya took his children ["grandchildren"] and led them to Zazum of Qutu as hostages (ana yaltiti ... usn).

"[30] Simmurum is known from writings found at Eshnunna dated to the reign of Isin ruler Ishbi-Erra (c. 2017-1986 BC).

Me, too, he has abandoned now, and he is ready to follow the ruler of Kakmu ..."[33]The kings and governors of the kingdom or province of Simurrum.

[3][37] An early Assyriologist suggested Simurrum was near "Tell 'Ali" which is not far from mouth of the Lower Zab on its left bank and is on the direct line from Assur to Arrapha (Kirkuk), which it is 42 kilometres (26 mi) west of, saying "The region south of Tell 'Ali has never been examined by archaeologists, but seems to contain numerous ruined towns and canals".

[39][40] The site of Qala Shirwana, a large mound 30 metres (98 ft) tall with an additional 10-metre (33 ft) citadel at the top in the southern basin of the Diyala river, on its west bank, near the modern town of Kalar, has been suggested as the site of Simurrum.

[51] During the reign the fourth ruler of the Ur III dynasty Shu-Sin (c. 2037–2028 BC) it is known that the military governor of the nearby city of Pašime was a Arad-Nanna though it is not known if that was the same person.

[57][46][58] A carnelian cylinder seal appeared on the antiquities market reading "Keleš-atal, king of Karaḫar: Balalatum (is your) wife.