Answer the following question: Given the following context:  According to the Dictionary of American Hymnology "Amazing Grace" is John Newton's spiritual autobiography in verse.In 1725, Newton was born in Wapping, a district in London near the Thames. His father was a shipping merchant who was brought up as a Catholic but had Protestant sympathies, and his mother was a devout Independent unaffiliated with the Anglican Church. She had intended Newton to become a clergyman, but she died of tuberculosis when he was six years old. For the next few years, Newton was raised by his emotionally distant stepmother while his father was at sea, and spent some time at a boarding school where he was mistreated. At the age of eleven, he joined his father on a ship as an apprentice; his seagoing career would be marked by headstrong disobedience. As a youth, Newton began a pattern of coming very close to death, examining his relationship with God, then relapsing into bad habits. As a sailor, he denounced his faith after being influenced by a shipmate who discussed Characteristics of Men, Manners, Opinions, Times, a book by the Third Earl of Shaftesbury, with him. In a series of letters he later wrote, "Like an unwary sailor who quits his port just before a rising storm, I renounced the hopes and comforts of the Gospel at the very time when every other comfort was about to fail me." His disobedience caused him to be pressed into the Royal Navy, and he took advantage of opportunities to overstay his leave and finally deserted to visit Mary "Polly" Catlett, a family friend with whom he had fallen in love. After enduring humiliation for deserting, he managed to get himself traded to a slave ship where he began a career in slave trading.  answer the following question:  What is the full name of the person who denounced his faith after being influenced by a shipmate's discussion of a book written by the Third Earl of Shaftesbury?
Answer:
John Newton