What is "fuzhen"

Fuzhen (died 1909), also known as Ruiyu, born of the Manchu Guwalgiya clan, was a noble of the Qing Dynasty. He was a member of the Bordered Yellow Banner of the Qing Dynasty's Eight Banners, and a direct descendant of Fiongdon , who served under the Qing Dynasty's founder Nurhaci. Fuzhen held the hereditary title of First Class Duke Xiongyong . In 1873 he married the Xianfeng Emperor's daughter Gurun Princess Rong'an and was granted the title of Prince Consort .