Question about American History, what was life like for poc familys in states that'd later join the Confederacy?

Writing a vampire character and my current outline is that their family arrived in Texas sometime before the American Civil War (Like... around the 1830s-1840s I think? not entirely sure) fleeing from the Philippines, and I'm curious as to how they'd be treated back then? Although now that I'm asking this I'd also be interested in how other poc were treated in that time lol.