Original: July 9   Estevão da Gama departs Massawa, leaving behind 400 matchlock men and 150 slaves under his brother Christovão da Gama, with orders to assist the Emperor of Ethiopia to defeat Ahmad ibn Ibrihim al-Ghazi, who has invaded his Empire.
Simplified: July 9 - Estevão da Gama departs Massawa, leaving behind 400 matchlockmen and 150 slaves under his brother Christovão da Gama, with orders to assist the Emperor of Ethiopia defeat Ahmad ibn Ibrihim al-Ghazi who has invaded his Empire.