The Jiajing Emperor (Chinese: 嘉靖; pinyin: Jiājìng; Wade–Giles: Chia-ching; 16 September 1507 – 23 January 1567) was the 12th Emperor of the Ming dynasty, reigned from 1521 to 1567. Born Zhu Houcong, he was the former Zhengde Emperor's cousin. His father, Zhu Youyuan (1476–1519), the Prince of Xing, was the fourth son of the Chenghua Emperor (reigned from 1464 to 1487) and the eldest son of three sons born to the emperor's concubine, Lady Shao. The Jiajing Emperor's regnal name, "Jiajing", means "admirable tranquility".