Where does “Trafalgar” come from?

Trafalgar comes from Arabic طَرَف الغَرْب, meaning "the western cape" or "edge of the west," referring to the promontory in southwestern Spain.

Ancestry of “Trafalgar”, step by step

Step	Language	Word	Meaning
1	Arabic	طَرَف الغَرْب	western cape

Trafalgar — Etymology, Origin & Word History | Etymology Explorer