Jianzhou Jurchens
The Jurchens of a millennium ago became the ancestors of the Manchus when Nurhaci united the Jianzhou Jurchens (1593–1618) and his son subsequently renamed the consolidated tribes as the "Manchu". Throughout this period, the Jurchen language evolved into what we know as the Manchu language. Its script has no relation to the Manchu alphabet, however. The Jurchen script was instead derived from the Khitan script, itself derived from Chinese characters.