Is Savannah a good confirmation name?

Soon, I need to have my confirmation name handed in to my pastor, along with a reason WHY I had chosen that name. I really like Savannah, and my first name is Brianna. My friends had told me a while ago that that name seems good for me. I'm also liking Shiloh a little bit (peace bringer; bringer of prosperity) which has a bit more meaning apparently. I think the name needs to relate to the bible somehow, is there any bible stories that take place in the savannah? Thank you!