Frances (1915–2013) and Joseph (1916–2006) Gies were the world’s bestselling historians of medieval Europe. Together and separately, they wrote more than twenty books, which col-lectively have sold more than a million copies. They lived in Michigan.

Frances (1915–2013) and Joseph (1916–2006) Gies were the world’s bestselling historians of medieval Europe. Together and separately, they wrote more than twenty books, which col-lectively have sold more than a million copies. They lived in Michigan.