Nurhaci [SEP] father
In 1582, Nurhaci's father Taksi and grandfather Giocangga were killed in an attack on Gure (now a village in Xinbin Manchu Autonomous County) by a rival Jurchen chieftain, Nikan Wailan ("Nikan Wailan" means "secretary of Han Chinese" in the Jurchen language, thus his existence is suspected by some historians.) while being led by Li Chengliang. The following year, Nurhaci began to unify the Jurchen bands around his area.
In 1584, when Nurhaci was 25, he attacked Nikan Wailan at Turun
(today a village in Xinbin too) to avenge the deaths of his father and grandfather, who are said to have left him nothing but thirteen suits of armor. Nikan Wailan fled away to Erhun, which Nurhaci attacked again in 1587. Nikan Wailan this time fled to Li Chengliang's territory. Later, as a way to build relationship, Li gave Nikan Wailan to Nurhaci, who beheaded Nikan Wailan immediately. With Li's support, Nurhaci gradually grew his strength in the following years.
Unifying the Jurchen tribes.