This is a rather interesting question. Can you reincarnate to the past? Certainly, if you can reincarnate you should be able to reincarnate to any place and or time. All things are possible if you believe an if you believe in reincarnation, it should be possible. However, you still probably wouldn't as it wouldn't serve any purpose. Let's assume that you have lived sine time began in one form or another. Your non-physical self would already have access to all those experiences and I would assume would want to experience something new and different. If you've already experience a life in the 1500's then why would you do it again? Life lessons can be experienced in any time period and often are if they're not learned. Sure, the faces and places my change, but the underlying scenarios remain the same. For example, you're born in 1525 with the soul purpose of experiencing a life of hardship to learn inner strength and perseverance. If you then commit suicide in 1550 because you found the hardship you were experiencing to difficult to bear, then you didn't learn the lesson, but you can you experience hardship in any time period. You wouldn't need to reincarnate back to 1525.