#ethimology

In lotr all the names of characters, regions and kingdoms have a meaning and story. There are whole essays on the meaning of the names of characters like Galadriel and Celeborn. In unfinished tales there's a section that discusses the name of the river Gwathló and why it was named like that; Gwath means darkness or shadow, as the river was once covered by tall trees that casted their shadow over its waters, and ló means swamp or marshland, as the Numenoreans who explored the river reached Swanfleet, a marshland from which the river originated. Later the Numenoreans used the forests around the river for timber and deforested the whole region, making the name of the river be outdated due the change on the landscape. And you have to consider that this river had next to zero importance whatsoever, but it still had a whole backstory.

Documentary evidence suggests that the bay is named after a group of around 350 Catalan servicemen believed to have settled there after having assisted the Anglo-Dutch forces who captured Gibraltar during the War of Spanish Succession on the 4th of August, 1704.

From Old French sclave, from the Medieval Latin sclavus, from the Byzantine Greek σκλάβος , which, in turn, comes from the ethnonym Slav, because in some early Medieval wars many Slavs were captured and enslaved.