The prince Syria N Usâma ibn Munqidh belonged to the family which held the castle and the town of Chayzar on the Oronte at the 12th century. He was born in 1095 in Chayzar and died in Damas in 1188. He left his native city only for missions with Damas, with the Cairo, in Iraq where he leads military forwardings.

Its life is thus between the catch and the loss of Jerusalem by the crusaders in full time of the crusades. It bound friendship to Imad ED-DIN Zengi.

At the evening of its life it wrote an autobiography. Itibâr “the experiment”, an account of a capital interest for these times because of the spontaneousness as of the wisdom which support it. Indeed it is in the form of anecdotes that it makes us the account of its sometimes peaceful reports/ratios, sometimes stormy with the francs. It draws up us a portrait rather excavated of the latter. “When one is with the fact of what touches with the francs one can only exalter and to sanctify very high, because one sees in them animals which have the virtue of courage and the warlike heat”.