This book offers a different perspective than that found in mainstream US and Texas history because it acquaints readers with pre-1836 people, places, and events. The title Friendly Betrayal aims to capture the Spanish Mexican Texans’ disappointment when they (1) first welcomed US immigrants to Mexico (Texas) as fellow Mexicans and (2) how (after 1836) the growing Anglo Saxon majority treated our ancestors as foreigners in their own homeland. Part I contains a fictionalized storyline that delves into the initial blending of Native American and Spanish European cultures that produced today’s mestizo people. Due to their genetic cultural (not political) ties to Mexico, this group (generally called Mexican Americans in the United States) continues to strongly maintain, defend, and preserve their unique identity, history, and heritage on this side of the border. Part II contains supporting background information.