Cuyen
Cuyen (; 1580 – 14 October 1615) was a Manchu prince and eldest son of the Later Jin ruler Nurhaci, the early patriarch of the Qing dynasty. An accomplished warrior, Cuyen was instrumental in the consolidation of Nurhaci's authority among rival Jurchen clans. He also served as the primary civil administrator for intermittent periods in the regime founded by Nurhaci. However, he eventually lost favour with his father because he tried to cast sorcery spells against other princes. He was placed in solitary confinement and died in captivity a few years later. Early life Cuyen was born in 1580, somewhere in the present-day Jilin province in northeastern China, to a prominent family of Jianzhou Jurchens. He is the grandson of Taksi and eldest son of Nurhaci, who at the time was just beginning to rise to prominence in the Jurchen tribe he belonged. Cuyen's mother was Hahana Jacing of the Tunggiya clan, Nurhaci's primary wife, who also gave birth to the prince Daišan. Cuyen was an able warrior, and spent much of his youth assisting his father in consolidating power in the Manchuria region. His fought in his first major battle against the Anculakit, a rival Jurchen tribe, in 1598,