I've been learning Italian Longsword, a style of HEMA (Historic European Martial Arts) for several months now, heavily using The Swordsman's Companion as a teacher and guide. It has been superb teacher, and most techniques and exercises have been well explained, and what isn't well explained often becomes evident from attempting the techniques.
This is, however, not about Italian Longsword, but wrestling. Several respectable sources (Such as Matt Easton of Scholagladitoria) mention that wrestling was a key component of many HEMA systems.
This leads to my question: is there such a book like "The Swordsman's Companion," but for wrestling/pugilism in HEMA?