Some Arthurian scholars have given credence to the Sarmatian connection, but others have found it based on conjecture and weak evidence. Few of the Caucasian traditions cited to support the theory can be traced specifically with the Sarmatians; many are known only from orally transmitted tales that are not datable before they were first recorded in the 19th century. Additionally, many of the strongest parallels to the Arthurian legend are not found in the earliest Brittonic materials, but only appear in the later Continental romances of the 12th century or later. As such, the traditions would have had to survive in Britain for at least a thousand years between the arrival of the Sarmatians in the 2nd century and the Arthurian romances of the 12th century. Nonetheless, the Sarmatian connection continues to have popular appeal; it is the basis of the 2004 film "King Arthur".