If you are interested in this topic, there is a great book on it called The Tartar King's Englishman. https://www.amazon.com/Tartar-Khans-Englishman-Gabriel-Ro

If you are interested in this topic, there is a great book on it called The Tartar King's Englishman. https://www.amazon.com/Tartar-Khans-Englishman-Gabriel-Ronay/dp/184212210X https://www.amazon.com/Tartar-Khans-Englishman-Gabriel-Ronay...