Another important Texas explorer was Francisco Vazquez de Coronado.
Coronado came to Texas before Cabeza de Vaca’s small ship was stranded here, but Coronado was a very different sort of man. Brave, yes, but also greedy. He came to the New World in search of gold. He took advantage of his native hosts. Not the best first impression!
Coronado never found the gold he sought, but he did discover the Grand Canyon, and he explored large portions of what is now Texas.
You can watch a documentary about him here.