The meaning of the name Trystan is Tumult. The origin of the name Trystan is Welsh. This is the culture in which the name originated, or in the case of a word, the language.
Originally a male name, it has now crossed over for females, as well. The spelling of Tristan was probably affected by French word "triste" meaning "sad," after the story of Tristan and Isolde, a doomed romance. "Tristan und Isolde," opera by Wagner