Dr Lamb was one of the most notorious sorcerer's during the reign of Charles I. Examples of his miraculous performance were relayed in 'Certainty of the World of Spirits' which was written by Richard Baxter. The book claimed that Lamb bumped into two people in the street one day, and they asked him to perform a miracle. He led them to his own home and both reported that he grew a tree in the inner room, right in front of their eyes. The tree was soon followed by three small men, holding axes to chop the tree down. One of the men collected some of the wood chippings and took them home to show his wife, and as night fell a huge storm began to rock their house until he went outside and threw them away. Dr Lamb was eventually set upon by a mob opposed to his practices and murdered in the street, and thirteen years later his former maid was found guilty of witchcraft and executed.