Dierk Hagedorn, born in 1966, is a designer, author, illustrator, and lecturer. He is head instructor for the longsword at Hammborg. He has transcribed roughly two dozen German fechtbuch manuscripts and has made them publicly available on his club’s website. He has published extensive printed volumes about some of the most important German manuscripts, such as the Peter von Danzig and the Jude Lew fechtbuch, Gladiatoria (New Haven), and Hans Talhoffer’s Munich codex. He has held many workshops and lectures about historical fencing in general and combat in armour in particular in various countries.