Whoa, lots of submitions.
Let me check this 'ere book. Hmm...because this book has no translations for individual letters, I will have to use what your letters stand for. "Princess" has been used in many manuscripts as "Chew". "Toadstool" refers to "Couch" in many translations. Lastly, "Peach" has been known to be called "Malicious" in this language. Your name would be "CC_Malicious".
Robert..........ah, here it is. Robert has been translated through this book as two seperate words: "Rob", which means "Fetch", and "Ert", which means "Rice". You are Fetchrice.