Xiahou Shang
Xiahou Shang married the younger sister of Cao Zhen, an adopted son of Cao Cao and a close childhood friend of Cao Pi. In his later years, Xiahou Shang took a concubine, whom he loved dearly. A family feud broke out when Xiahou Shang's concubine started fighting with Cao Zhen's sister to become Xiahou Shang's official spouse. When Cao Pi heard about it, he decided to intervene as a show of support for his fellow members of the Cao clan, so he had Xiahou Shang's concubine executed by strangulation.