Here's what we know about him:
* He is a skilled herbalist and alchemist. He is learning from Father Anselm, who is also an expert in these fields.
* He is curious and eager to learn. He is constantly asking questions and trying to understand the world around him.
* He is kind and compassionate. He cares about others and is willing to help them.
* He is also naive and inexperienced. He is easily swayed by the opinions of others and sometimes makes mistakes.
Mitchell's role in the story is crucial. He serves as a foil to Father Anselm, highlighting the older man's wisdom and experience. He also helps to drive the plot forward, as he is often the one who asks the questions that lead to new discoveries.
The book doesn't explicitly say Mitchell's last name. It is more about his relationship with Father Anselm. He is a figure of great importance in the story, but he is ultimately overshadowed by Father Anselm.