I imagine most who grew up in Texas know about it, since it's part of required Texas state history in our schools. It doesn't have the romance or story associated with the Alamo, since it's basically a story of a massacre of captured soldiers, but it certainly motivated the soldiers in the rest of Texas.
The slaughter at San Jacinto (now inside greater metropolitan Houston) was payback to the Mexicans.
The Battle of San Jacinto
The Battle of San Jacinto lasted less than twenty minutes, but it sealed the fate of three republics. Mexico would never regain the lost territory, in spite of sporadic incursions during the 1840s. The United States would go on to acquire not only the Republic of Texas in 1845 but Mexican lands to the west after the Treaty of Guadalupe Hidalgo ended the Mexican War in 1848. .......
About 3:30 in the afternoon, during the Mexican siesta period, Houston distributed his troops in battle array, bracketing the line with the "Twin Sisters" cannon. Shielded by trees and a rise in the terrain, the Texans were able to advance with some security. Then with the cries "Remember the Alamo" and "Remember La Bahia" or "Remember Goliad" ringing along their lines, the Texans swooped down on the dismayed Mexican army, pursuing and butchering them long after the battle itself had ended.
630 Mexicans were killed and 730 taken prisoner. Texans lost only 9 killed or mortally wounded; thirty were less seriously wounded. Among the latter was General Houston, whose ankle was shattered.