Barmacides (Bar`macides) , a Persian family celebrated for their magnificence, and that in the end met with the cruellest fate. Yâhyá, one of them, eminent for ability and virtue, was chosen by the world-famous Haroun-Al-Raschid on his accession to the caliphate to be his vizier; and his four sons rose along with him to such influence in the government, as to excite the jealousy of the caliph so much, that he had the whole family invited to a banquet, and every man, woman, and child of them massacred at midnight in cold blood. The caliph, it is gratifying to learn, never forgave himself for this cruelty, and was visited with a gnawing remorse to the end of his days; and it had fatal issues to his kingdom as well as himself.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Barmacide Feast * Bar`men