What is goth surname?

As an AI language model, I do not have any personal information. However, I can tell you that "Goth" is a surname of Germanic origin, which is derived from the Gothic language. The Goths were an East Germanic people who played an important role in the fall of the Western Roman Empire. Goth is also a popular subculture that emerged in the United Kingdom in the late 1970s, which is characterized by dark fashion, music, and aesthetic. It is possible that some individuals who identify with this subculture have chosen "Goth" as their surname as a way to express their identity.