Crimean Goths were Greuthungi-Gothic tribes who remained in the lands around the Black Sea, especially in Crimea. They were the least-impactful on the fate of Europe and the longest-lasting of the Gothic communities. Their existence is well attested through the ages though the exact period when they ceased to exist as a distinct culture is unknown; as with the Goths in general, they may have been diffused with the surrounding peoples. In the Fourth Turkish letter by Ogier Ghiselin de Busbecq, they are described as "a warlike people, who to this day inhabit many villages" though in the 5th century, Theodoric the Great failed to rouse Crimean Goths to support his war in Italy. At the time, it was customary to refer to a wide range of Germanic tribes as "Goths", so the exact ethnic origin of the Germanic peoples in Crimea is a subject of debate.