As Frederick II, Elector of Saxony, called the Gentle, died in September 1464 his sons Ernst und Albert, had to work together with William III, Landgrave of Thuringia, called the Brave, until his death in September 1482. From that political cooperation we still have some correspondence. The dukes wrote to each other of events happening in their lands. On the 14th January 1478 William wrote to his fellow dukes about the duel between Simon of Stetten and George of Rosenberg. And he gave us the most detailed and dramatic description of such a fight in the 15th century.
Read the rest on the Talhoffer blog.