《金史·本纪·卷十七》
贞初年，庄献太子完颜守忠死去，立皇孙完颜铿为皇太孙，不久也死去。
贞祐初，庄献太子守忠薨，立皇孙铿为皇太孙，寻又薨。
In the first years of Zheng Dynasty, son of Duke Zhuang Xian, Prince Wanyan Shouzhong, passed away. Grandson of the Emperor, Wanyan Keng, was appointed as Imperial Grandson, but he soon passed away too.