甘宁
Gan Ning kills Ling Tong's father, Ling Cao, at the Battle of Xiakou in 203. Since then, even after Gan Ning comes to serve Sun Quan, Ling Tong still holds a grudge against him. Their conflict is dramatised in chapters 67–68 of the novel, and is eventually resolved after Gan Ning saves Ling Tong's life.