Captain Ubaldo de Coca y Aguilar de Arteaga born in Havana, Cuba, Feb. 6, 1744, the son of Diego de Coca y Aguilar and Faustina de Arteaga y Castro-Palomino.
He started his military career in Havana, Cuba, at 19 years of age, on a Spanish militia regiment formed by young men from local aristocratic Creole families. A short time after joining he participated in the siege of Havana by the British in 1762, a military action that took place from March through August 1762 as part of the Seven Year´s War. His career quickly advanced from Distinguished Soldier in ´62, to Sub Lieutenant in ´63, Grenadier in ´68 and Captain in 1770.