Events Construction on the northern section of the Grand Canal of China's begun. The final expansion of the Lincoln Cathedral's completed. King Magnus I of Sweden founds a Swedish nobility by enacting a law accepting a contribution of a cavalry-member in lieu of ordinary tax payments. King Edward I of England forms the Court of King's Bench to hear petitions for justice instead of the king hearing them himself. The Wolf minimum of solar activity begins (approximate date). The Asen dynas… (More on 1280)