Task: Question Answering
Input (English): Passage: In the early 1830s, the army loaned the citizens of Gonzales a small cannon for protection against Indian raids.  After a Mexican soldier bludgeoned a Gonzales resident on September 10, 1835, tensions rose even further, and Mexican authorities felt it unwise to leave the settlers with a weapon. Colonel Domingo de Ugartechea, commander of all Mexican military forces in Texas, sent a small detachment of troops to retrieve the cannon. After settlers escorted the group from town without the cannon, Ugartechea sent 100 dragoons with Lieutenant Francisco de Castañeda to demand compliance, with orders to avoid force if possible.Many of the settlers believed Mexican authorities were manufacturing an excuse to attack the town and eliminate the militia. Texians stalled Castañeda's attempts to negotiate the cannon's return for several days as they waited for reinforcements from other colonies.  In the early hours of October 2, approximately 140 Texian volunteers attacked Castañeda's force. After a brief skirmish, Castañeda requested a meeting with Texian leader John Henry Moore.  Castañeda revealed that he shared their federalist leanings, but that he was honor-bound to follow orders.  As Moore returned to camp, the Texians raised a homemade white banner with an image of the cannon painted in black in the center, over the words "Come and Take It".  Realizing that he was outnumbered and outgunned, Castañeda led his troops back to Béxar.  In this first battle of the revolution, two Mexican soldiers were killed, and one Texian was injured when he fell off his horse. Although the event was, as characterized by historian William C. Davis, "an inconsequential skirmish in which one side did not try to fight", Texians soon declared it a victory over Mexican troops.  News of the skirmish spread throughout the United States, encouraging many adventurers to come to Texas to join the fight.Volunteers continued to arrive in Gonzales. On October 11, the troops unanimously elected Austin, who had no official military experience, the leader of the group he had dubbed the Army of the People.  From the beginning, the volunteer army proved to have little discipline.  Austin's first official order was to remind his men that they were expected to obey their commanding officers.  Buoyed by their victory, the Texians were determined to drive the Mexican army out of Texas, and they began preparing to march to Béxar. 
Question: What is the first name of the person for whom Texians raised a homemade white banner with an image of the cannon painted in black in the center on his return?
Output (English): John.