Complex sentence: At the end of his CHERUB life, he returns to his "Choke" surname and switches his two forenames around, to become Robert James Choke; however, he is still known to as James in later books.
Split into simpler sentences: At the end of his CHERUB life, he returns to his "Choke" surname and switches his two forenames around, to become Robert James Choke. However, he is still known to as James in later books.