From grade 2-5, Wilshire elementary, San Antonio, TX, we were taught that the only survivors of the Alamo were women and children.
Santa Anna ordered ‘no quarter’ after Travis refused his offer of surrender. This must be Hollywood artistic license. American moviemakers/TV series producers have never let the truth stand in the way of a good story.
Actually I wrote “last survivor” by accident. I meant last male-survivor, as the women were allowed to leave. All the rest of the male defenders, as you said, were executed in the show, and also in history. So Ray Liotta surviving and becoming an avenger is definitely Hollywood license.
Santa Anna used the red No Quarter flag three times: Alamo, Goliad, and San Jacinto.
The book Lone Star Rising is at Sams Club and very well researched.