1911 Encyclopædia Britannica/Sassanid
SASSANID, or Sassanian Dynasty (or Sasanian), the ruling dynasty of the neo-Persian empire founded by Ardashir I. in a.d. 226 and destroyed by the Arabs in 637. The dynasty is named after Sāsān, an ancestor of Ardashir I. For a list of the kings and the history of the empire see Persia: Ancient History, section viii.; for its fall see also Caliphate, section A, § 1.