Du Yuan 杜遠

In Chapter 27 of the Romance, Guan Yu left Cao Cao and escorted the carriage carrying the two ladies. When Zhang Liao came after him, Guan Yu told the attendants driving the carriage to hurry on along the main road and stayed behind alone, receiving from Cao Cao, who followed, a brocade battle robe on the point of his blade. Going after the carriage, he travelled some thirty li without seeing it and was searching in every direction when a young man in a yellow turban and brocade clothes came galloping up, leading more than a hundred foot soldiers, with a severed head hanging beneath his horse's neck. Romance, Ch. 27 §4–8 · 10

The young man introduced himself as Liao Hua of Xiangyang, and said that in these troubled times he had drifted about the land, gathered a band of more than 500 men and lived by plunder. His comrade Du Yuan, he said, had just come down the mountain on patrol and mistakenly seized the two ladies and brought them up the mountain; when he asked their attendants and learned that they were the wives of Imperial Uncle Liu of the Great Han, he had wanted to send them down the mountain, but Du Yuan spoke insolently, so he killed him, and he presented the head and asked pardon. Romance, Ch. 27 §11–12

The two ladies said that had General Liao not protected them, they would already have been dishonoured by Du Yuan. When Guan Yu asked those around him, they told him that Du Yuan had seized the ladies and carried them up the mountain, intending to divide them with Liao Hua and take one each as a wife, but Liao Hua, after asking who they were, bowed low and treated them with the greatest respect, and when Du Yuan would not go along, Liao Hua killed him. Guan Yu bowed to Liao Hua in thanks, but in the end, regarding him as a remnant of the Yellow Turbans, declined to travel with him and would not accept his gold and silk either. Romance, Ch. 27 §13–14