The Maan and Shihab government of different parts of Mount Lebanon, between 1667 and 1841, was an Ottoman iltizam, or tax farm, rather than a dynastic principality, and the multazims were never reigning princes. The relations between the Porte and the Shihab emirs revolved around the payment of taxes, and the official legitimation of their position as multazims. Such was the precariousness of their position that over the more than three centuries of the two dynasties (1516-1840) only two significantly strong leaders emerged, Fakhr-Al-Din I (1516-1544) and his grandson Fakhr al-Din II (1591-1635). Bashir Shihab II (1788-1840) was also an important prince but he was viewed as a tyrant at the period rather than a leader. That led to the 1840 revolution against Bashir and his Egyptian allies .