Sam Houston is another. He loved his south but desired an option other than war.
Houston truly was a great and wise man.
So much misery would have been avoided if he had been listened to.
From Wikipedia:
After leaving the Governor's mansion, Houston traveled to Galveston. Along the way, many people demanded an explanation for his refusal to support the Confederacy. On April 19, 1861 from a hotel window he told a crowd:
Let me tell you what is coming. After the sacrifice of countless millions of treasure and hundreds of thousands of lives, you may win Southern independence if God be not against you, but I doubt it. I tell you that, while I believe with you in the doctrine of states rights, the North is determined to preserve this Union. They are not a fiery, impulsive people as you are, for they live in colder climates. But when they begin to move in a given direction, they move with the steady momentum and perseverance of a mighty avalanche; and what I fear is, they will overwhelm the South.
A big difference was that Houston opposed secession of Texas, while Davis only opposed secession in '45 when the Massachusetts legislature voted for secession over Texas statehood.