Original sentence: 1580) usually known as Shibata Nagaatsu, was the son of Shibata Tsunasada and Shibata Shigeie`s elder brother.During the "Otate no ran", Naganori supported Uesugi`s son,  Kagekatsu.Naganori died in 1580 of illness.Naganori served under Uesugi Kenshin from the earliest campaigns
Edited sentence: , usually known as Shibata Nagaatsu, was a military commander who served under the warlord Uesugi Kenshin.During the Ōtate no Ran, the succession struggle that followed Kenshin's death, Naganori supported Kenshin's son Kagekatsu.Naganori died of illness in 1580.The son of Shibata Tsunasada and the elder brother of Shibata Shigeie, Naganori served under Kenshin from the latter's earliest campaigns