Question: Who is Argishti I Of Urartu's grandchild?

Knowledge 1: Argishti I of Urartu
Argishti I , was the sixth known king of Urartu, reigning from 786 BC to 764 BC.He founded the citadel of Erebuni in 782 BC, which is the present capital of Armenia, Yerevan.Alternate transliterations of the name include "ArgishtisArgistiArgišti", and "Argishtish".Although the name is usually rendered as "Argišti" (read: "Argishti"), some scholars argue that "Argisti" is the most likely pronunciation.This is due to the belief that the Urartians used the cuneiform symbol "š" to voice an "s"-sound, as opposed to representing the diagraph "sh".A son and the successor of Menua, he continued the series of conquests initiated by his predecessors.He was involved in a number of inconclusive conflicts with the Assyrian king Shalmaneser IV.He conquered the northern part of Syria and made Urartu the most powerful state in post-Hittite Asia Minor.He also expanded his kingdom north to Lake Sevan, conquering much of Diauehi and the Ararat Valley.Argishti built the Erebuni Fortress in 782 BC, and the fortress of Argishtikhinili in 776 BC.He was succeeded by his son Sarduri II.Linguists believe that the name "Argishti" has Indo-European etymology (Armenian).Compare Armenian արեգ (translit. "areg") – “sun deity”, “sun”, Phrygian ΑΡΕJΑΣΤΙΝ (translit."Areyastin") - “epithet of the great mother” and Ancient Greek αργεστής (translit."argestes") - “shining”, “brilliant”, “white”, “bright”."TiDi") meant "god" in proto-Armenian(compare with Classical Armenian "Dik"'). [SEP] Knowledge 2: Sarduri II
Sarduri II (ruled: 764–735 BC) was a King of Urartu, succeeding his father Argishti I to the throne.The Urartian Kingdom was at its peak during his reign, campaigning successfully against several neighbouring powers, including Assyria.Sardur II was so confident in his power that he erected a massive wall at Tushpa (modern-day Van) with the following inscription:He was succeeded by his son, Rusa I.
Knowledge 1: Argishti I of Urartu
Argishti I , was the sixth known king of Urartu, reigning from 786 BC to 764 BC.He founded the citadel of Erebuni in 782 BC, which is the present capital of Armenia, Yerevan.Alternate transliterations of the name include "ArgishtisArgistiArgišti", and "Argishtish".Although the name is usually rendered as "Argišti" (read: "Argishti"), some scholars argue that "Argisti" is the most likely pronunciation.This is due to the belief that the Urartians used the cuneiform symbol "š" to voice an "s"-sound, as opposed to representing the diagraph "sh".A son and the successor of Menua, he continued the series of conquests initiated by his predecessors.He was involved in a number of inconclusive conflicts with the Assyrian king Shalmaneser IV.He conquered the northern part of Syria and made Urartu the most powerful state in post-Hittite Asia Minor.He also expanded his kingdom north to Lake Sevan, conquering much of Diauehi and the Ararat Valley.Argishti built the Erebuni Fortress in 782 BC, and the fortress of Argishtikhinili in 776 BC.He was succeeded by his son Sarduri II.Linguists believe that the name "Argishti" has Indo-European etymology (Armenian).Compare Armenian արեգ (translit. "areg") – “sun deity”, “sun”, Phrygian ΑΡΕJΑΣΤΙΝ (translit."Areyastin") - “epithet of the great mother” and Ancient Greek αργεστής (translit."argestes") - “shining”, “brilliant”, “white”, “bright”."TiDi") meant "god" in proto-Armenian(compare with Classical Armenian "Dik"'). [SEP] Knowledge 2: Sarduri I
Sarduri I (ruled: 834 BC – 828 BC), also known as Sarduris, was a king of Urartu in Asia Minor.He was the son of Lutipri, the second monarch of Urartu.Sarduri I is most known for moving the capital of the Urartu kingdom to Tushpa (Van).This proved to be significant as Tushpa became the focal point of politics in the Near East.He was succeeded by his son, Ishpuini of Urartu, who then expanded the kingdom.The title Sarduri used was 'King of the Four Quarters'.The name Sarduri has been connected to the Armenian name Zardur ("star-given").
Knowledge 1: Sarduri I
Sarduri I (ruled: 834 BC – 828 BC), also known as Sarduris, was a king of Urartu in Asia Minor.He was the son of Lutipri, the second monarch of Urartu.Sarduri I is most known for moving the capital of the Urartu kingdom to Tushpa (Van).This proved to be significant as Tushpa became the focal point of politics in the Near East.He was succeeded by his son, Ishpuini of Urartu, who then expanded the kingdom.The title Sarduri used was 'King of the Four Quarters'.The name Sarduri has been connected to the Armenian name Zardur ("star-given"). [SEP] Knowledge 2: Sarduri II
Sarduri II (ruled: 764–735 BC) was a King of Urartu, succeeding his father Argishti I to the throne.The Urartian Kingdom was at its peak during his reign, campaigning successfully against several neighbouring powers, including Assyria.Sardur II was so confident in his power that he erected a massive wall at Tushpa (modern-day Van) with the following inscription:He was succeeded by his son, Rusa I.

Answer: Rusa I