Guan Ding 關定

Guan Ding is a fictional character who appears in Sanguo Yanyi  as Guan Ping's father.

Biography
When Shu general Guan Yu came to stay at his lodge, Guan Yu met Guan Ping. When Liu Bei and Zhang Fei came to meet Guan Yu, Guan Ding offered his son to Guan Yu saying, “I have been thinking of sending the younger in your train, General, would you take him?” and mentioned both he and Guan Yu had the same surnames (Guan (關)).