#13 ʻO nā progenitors he wahine Landseer a he kāne St. Bernhard, ma hope ua hele ʻo ia i kahi ʻīlio mauna Pyrenean.
Ua hānau ʻia ʻo Leonberger mua i ka makahiki 1846. Ua ʻike ʻo Essig i ke kūʻai maikaʻi ʻana i kāna ʻano hou, ʻo nā mea kaulana ʻo Empress Sissi, Napoleon III, ke Aliʻi o Wales, King Umberto o Italia, Richard Wagner, Bismarck a me nā mea ʻē aʻe he nui.