The Xiahou Ba reference article from the English Wikipedia on 24-Apr-2004
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Xiahou Ba

Xiahou Ba was one of the most powerful on Cao Cao's side after his father, Xiahou Yuan died in 202 AD. He swore to avenge his father, by killing his sworn enemy Zhang Fei.

After Xiahou Yuan died, Ba always wanted to be like his father. He took his father's fighting cavalry, and used it. He was his father's eldest and favourite son. He died in 242 AD of old age.