1. The Battle of San Jacinto: On April 19, 1836, the Battle of San Jacinto took place, which was a pivotal moment in the Texas Revolution as Texan troops led by General Sam Houston defeated Mexican forces under General Antonio López de Santa Anna, resulting in Texas gaining its independence from Mexico.

2. Lyndon B. Johnson's birthday: April 19, 1908, marks the birth of Lyndon B. Johnson, the 36th President of the United States who was born in Stonewall, Texas. Johnson's presidency was marked by the Civil Rights Act of 1964, Medicare, and the escalation of the Vietnam War.

3. West, Texas Explosion: On April 19, 2013, an explosion occurred at a fertilizer plant in West, Texas, causing 15 deaths, more than 160 injuries, and extensive damage to buildings and homes in the surrounding area.

4. The Waco Siege: On April 19, 1993, a 51-day siege began at the Mount Carmel Center, a compound in Waco, Texas, that was home to the Branch Davidians religious group. The siege ended on April 19 with a deadly fire, resulting in the deaths of 76 people, including David Koresh, the leader of the group.

5. Anti-Santa Anna Protests: On April 19, 1844, a group of Texan citizens gathered in Houston to protest the arrival of Mexican General Antonio López de Santa Anna, who was visiting Texas at the time. The protest turned into a riot, and Santa Anna was forced to flee the city. This event reflects the ongoing tensions between Texas and Mexico at the time.