Ernst Herzfeld maintained that the dynasty of
Gondophares represented the
House of Suren, highest of the five premier families of
Parthian Empire, invested with the hereditary right of
commanding the royal armies, and placing the crown on the king's head at the coronation. Probably when around 129 BC, nomad peoples, especially the
Indo-Scythians (
Sacaraucae,
Old Persian Sakaravaka "nomadic
Saka” or Saraucae) and the
Tocharians attacked the eastern frontier of
Parthia, defense was entrusted by the Parthian emperors to the Surens; and the latter eventually not only repelled the Indo-Scythians, but pursued them into
Arachosia and the
Punjab, this event probably representing
interitus Saraucarum ( the perishing of the Sacaraucae) of
Gnaeus Pompeius Trogus (Prologue 42). Echoes of these events are preserved in the legends of the Sistān cycle, partly incorporated in the
Shahnameh, but once also surviving as independent epics, such as the
Garšāspnāma mentioned in the
Tārikh-e Sistān, and the
Ketāb al-Sakisarān cited by
al-Masudi. These related the deeds of the hero
Garshasp and his descendants,
Narimān, Sām, Zāl or Dastān, and above all of the latter's son Rostam. It is difficult to relate the
Indo-Parthian names known from coins and history to those of the epic, which are possibly honorific titles, since a recently reported silver coin describes Gondophares (spelt in Greek script Hyndopharres) as
surnamed Sām. A single ruler may of course have received more than one such title, and the historical names may be repeated in succeeding generations. Scholars note Rostam was not Ferdowsi's invention. By the end of the Sasanian peiod, legends of Rostam were well known across all Iranian lands. Ferdowsi was chiefly responsible for glorifying his fame. A substantial collection of
Pahlavi texts spoke of the legend of Rostam. The
orientalist Josef Markwart traced the background of Rostam, showing his Parthian (Arsacid) origins. The home of Rostam in the
Shahnameh was
Sakastan, the ancestral seat of the
House of Suren, one of the seven
Great Parthian Families of Iran (the Seven Parthian Clans). This indicates that the House of Rostam, in the epic, is directly parallel to a Parthian noble house. Rostam's dragon banner was also directly influenced by the Parthians. == Family tree ==