BATTLE OF WAYNA DAGA

The 'Battle of Wayna Daga' (Amharic for "Grape-cultivating altitude") occurred 21 February 1543 east of Lake Tana. Led by the Emperor Galawdewos, the combined army of Ethiopian and Portuguese troops defeated the Muslim army led by Imam Ahmad ibn Ibrihim al-Ghazi. Ahmad was killed by a Portuguese musketeer, who charged alone into the Muslim lines. As his soldiers learned of the Imam's death, they fled the battlefield.
His wife Bati del Wambara managed to escape the Ethiopian forces with the forty surviving flintlockmen and return to Harar, but her son was captured in the aftermath and later exchanged for the Emperor's brother, Menas.