《元史·列传·卷三十六》
幼年为丞相史天泽所器重，留在他家中教养。二十岁即任百户，有勇有谋。太宗四年，金将伯撒再度攻取卫州，郭侃奋力抵抗，在新卫州破金军四万。
壬辰，金将伯撒复取卫州，侃拒之，破其兵四万于新卫州。
When he was young, Guo Kan was valued by the Prime Minister Shi Tianze and studied and lived in Shi's family. He served as a centurion at the age of 20. He was brave and resourceful. In the fourth year of Taizong's reign, Jins' general Bo Sa attacked Weizhou again. Guo Kan resisted fiercely and defeated 40,000 troops of Jins' in Xinweizhou.