Lyric discussion by fairweatherfriend 

I think the St. Augustine referred to in the song might be the actual person. He was converted to Christianity, embraced it as truth, and became a saint, but eventually left this sect of religion. Although he no longer practiced Christianity, he could not bring himself to refute his testimony about what he believed to be true.

I don't think this song is religious, but I do think it is about someone who turned their back on the narrator just as St. Augustine turned on religion. Although the subject has abandoned either this love, familial tie, or friendship for something completely opposite, he or she cannot deny this past relationship. "Hollywood" could either refer to the actual place. It could also have a metaphorical meaning because Hollywood is geographically opposite of St. Augustine within the continental United States, just as the subject is completely opposite of the person they used to be.

"I know you tried I know you're cursed I know your best was still your worst When Hollywood was calling out your name Saint Augustine"

That part gets me every time.

Great! My thoughts about this song are quite similar to yours. I think that this song is about losing love. "Poisoned in their graves" might be Romeo and Guliet, and this lines could mean that subjects of the song came to the point where their relationship is nothing but betrayal of Love. The narrator at some point reproaching his lover in the chorus. And "Hollywood" could be interpretated as a fame. She decided to break their relationship because he stood on her way to fame. But her pursuits were in vain, and now they can't be close to each other anymore, love...

@fairweatherfriend dude, St. Augustine grew up with essentially no religious affiliation save for the Roman gods (as was the norm at that time). Later in life, he converted to Manicheanism. He practiced this for a decade before converting himself to Christianity. He died a Christian in N. Africa.

An error occured.