Rostaing (Latin Rostagnus), wanda aka fi sani da Rostany a cikin Catalan, shi ne na farko Count na Girona (785-801), yana mulki a kan farkon da aka kafa na Catalan Counties wanda ya kafa "Marca Hispanica". Wani mashahurin Frankish, an daukaka shi zuwa Count na Girona a lokacin Charlemagne. A cikin bazara na 800 ya jagoranci dakarunsa tare da Louis the Pious don shiga cikin yaƙin neman zaɓe wanda ya ƙare da kewaye da faɗuwar Barcelona
, yana cire masarautar Larabawa ta ƙarshe na birnin Sa'dun al Ruayni. Tushen ya ba da Count na Girona na gaba wanda ya fara mulkinsa a 811. Saboda haka, ainihin ranar mutuwar Rostany da kuma dangantakarsa, idan akwai, ga magajinsa ba su da tabbas.