Battle of al-Qādisiyyah
Qaren II son of the Qarens (Qaren ben Qarinas al-Qarnas) finally held the troop command under Ardashir III (r. 628-629), but in 637 he fled from the Battle of al-Qādisiyyah and was defeated by the Arab Ibn Amir at Ecbatana, today Hamadan. During the Arab invasion the Karenas tried to maintain semi-independence by paying tribute to the Caliphate, and some of the lands of the Karenas appear to have remained independent until the 11th century, after which the House of Karen is no longer attested by name.