Jesenice was first mentioned as "Assling" in a 1004 deed of donation issued by King Henry II of Germany, in which nearby Bled ("Veldes" at the time) was also mentioned. There were no settlements there at that time, and the name Assling only marked an area on the banks of Jesenica Creek. Later, a settlement slowly started to grow around the area now known as Murova, where St. Leonard's Church is today. With the March of Carniola it passed to the Austrian House of Habsburg upon the Battle on the Marchfeld in 1278.