Giocangga (Manchu: ; 覺昌安 Juéchāng'ān; 1526–1583) was the son of Fuman and the paternal grandfather of Nurhaci, the man who was to unify the Jurchen peoples and begin building what later became the Manchu state. Both he and his son Taksi went to attack Atai's fort; it was being besieged by a rival Jurchen chieftain Nikan Wailan (; 尼堪外蘭 Níkān Wàilán), who promised the governance of the city to whoever would kill Atai. One of Atai's underlings rebelled and murdered him. Both Giocangga and Taksi were killed by Nikan Wailan under unclear circumstances. Giocangga, Taksi and Nikan were all under command of Li Chengliang.

His temple name was Jǐngzǔ (景祖).

In 2005, a study led by a researcher at the British Wellcome Trust Sanger Institute suggested that Giocangga might be a direct male-line ancestor of over 1.5 million men, mostly in northeastern China. This was attributed to Giocangga's and his descendants' many wives and concubines. Gioncangga's descendants in the patrilineal line are concentrated among several ethnic minorities who were part of the Manchu Eight Banners system, and are not found in the Han Chinese population.

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覺昌安（ᡤᡳᠣᠴᠠᠩᡤᠠ|v=Giocangga，1526年 - 1583年），中國明朝後期女真建州左衛領袖，明朝史料中譯為教場、叫場。清朝實際上創始人清太祖努爾哈赤的祖父。

覺昌安曾於嘉靖三十六年（1557年）在撫順等地劫掠；三十八年（1559年）向明朝地方官悔過入貢。萬曆初年為建州左衛督指揮，萬曆十一年（1583年），同其子塔克世赴古埒城試圖勸降叛明的孫女婿阿台，不料尼堪外蘭破城後縱兵屠城，覺昌安與塔克世均死難。1636年5月16日（清崇德元年四月乙亥朔十二日丙戌），皇太極追尊他為昌王，1648年12月18日（清順治五年十一月辛酉朔五日乙丑），順治帝追謚他為翼皇帝，廟號景祖。

Read more...: 家庭   後代人數