A saint whose real name was Muhyiddin, known as 'Benli Sultan' due to a large mole (ben) on his cheek. Believed to have lived in the 16th century, he carried out spiritual teaching and trained students in the region for a long time. His tomb and complex are in Ahlat village near Kastamonu, on the foothills of Mount Ilgaz; the complex was built during the reign of Yavuz Sultan Selim.