Complex sentence: Some of those early students were Temple Lea Houston, son of President Sam Houston, a famous western gun-fighter and attorney; and Lawrence Sullivan "Sul" Ross famous Confederate General and later President of Texas A&M University.
Split into simpler sentences: Some of those early students were, Temple Lea Houston, son of President Sam Houston, a famous western gun-fighter and attorney. Along with Lawrence Sullivan "Sul" Ross famous Confederate General and later President of Texas A&M University.