《资治通鉴·唐纪·唐纪六》
洛水县人李去惑占据城池降唐，秦王李世民派彭公王君廓率一千五百名骑兵赴水，进城与李去惑共同守城。
洺水人李去惑据城来降，秦王世民遣彭公王君廓将千五百骑赴之，入城共守。
Li Quhuo, a resident of Luoshui County, occupied the city and surrendered to the Tang Dynasty, King Qin Li Shimin sent Peng Gongwang Junkui to lead 1,500 cavalry into the water to enter the city to defend the city with Li Quhuo.