叔季

Etymology
of (711 BCE - 694 BCE) had four sons. His oldest son, Duke Zhuang of Lu, succeeded his father. His other three sons were Qingfu (慶父), Shu Ya (叔牙) and Ji You (季友), and they founded the clans known as the. The latter two brothers became the patriarchs of powerful landlord families that later came to be used as a metaphor for those who monopolize power.

Noun

 * 1)  those who monopolize power

Proper noun

 * 1)  the House of the Descendants of Shu Ya died 662 BCE and the House of the Descendants of Ji You died 644 BCE