曹德 / Cao De (Late Han)
Hanji 971 introduces Cao De as 曹操’s younger brother and a victim killed with 曹嵩 in the 曹嵩遇害 branch. The episode uses his death to make the disaster a family catastrophe, not only the killing of Cao Cao’s father.
The source also preserves a dramatic 《后汉书》-line detail that Cao De was holding his father’s seal and that the seal later entered a Xuzhou black-market story. The wiki keeps that detail source-scoped because the episode uses it narratively, while the durable connection is Cao De’s death alongside Cao Song and the revenge campaign that follows.