Abdallah Bey
Command Ratings
Abou-Saad (also rendered Abu Saad in some secondary compilations) is cited in Napoleonic-era campaign literature as the Ottoman commander at Jaffa (Yāfā) during Bonaparte’s Syrian expedition of 1799 and is specifically named as the commandant to whom Bonaparte addressed a surrender summons immediately before the French assault.
In the French narrative commonly circulated under the title Campagne de Syrie de Napoléon (printed in the nineteenth century and preserved in later reproductions), Bonaparte is described as sending an officer to “the commandant of Jaffa, Abou-Saad,” with an offer of safeguards in order to avert the destruction expected from an assault. The same narrative reports that shortly thereafter the French army saw the head of the parliamentary emissary displayed on the ramparts, after which Bonaparte renewed the bombardment and ordered the assault that carried the town on 7 March 1799.
Maybe Abdallah Bey only Abou-Saad (أبو سعد - Father of Prosperity) as an honorific kunya. He was appointed by Ahmed al-Jazzar Pasha, the Governor of Acre and Sidon, to hold the port of Jaffa against the French invasion. From de la Jonquière, L'Expédition d'Égypte, Abd al-Rahman al-Jabarti, Aja'ib al-Athar, Sir Edward Cust, Annals of the Wars of the Eighteenth Century (Vol. V, p. 176), likely in Nathan Schur, Napoleon in the Holy Land (1999) if I can find it.
Sources
XX 98 defended Jaffa with Ottoman forces