on 12 november 1434 he held a speech at the council of basel, where he argued that the swedish monarch, eric of pomerania, was a successor to the gothic kings, and that the swedish delegation deserved senior rank. the spanish delegation responded with a claim of seniority because of the visigoths. notes of these speeches were written down and preserved, and included by johannes magnus when he wrote the influential "history of the nordic people" about 150 years later. his research results resulted in gustav vasa's son styling himself as eric xiv, although his father disapproved.