Original: In 1769 , Gaspar de Portolà during his 1769 expedition of Alta California named it El Río de Nuestra Señora La Reina de Los Ángeles de Porciúncula , so translated : The River of Our Lady Queen of the Angels of Porciuncula .
Simplified: The full name they gave the river was actually El Río de Nuestra Señora La Reina de Los Ángeles de Porciúncula , which translated to English means : The River of Our Lady Queen of the Angels of Porciúncula .