Henry promoted More until More became Lord Chancellor. As such he was master of equity law and of the Court of Chancery, the most powerful judicial office in the land. But, in 1532, when he saw that King Henry was determined to marry Anne Boleyn and that divorce was in the air, rather than stay in the King’s cabinet, he claimed ill health and was allowed to retire from the bench.

That's when things started to deteriorate for him. The King invited him to the marriage with Boleyn and More declined to attend. His refusal was a kiss of death. Once it became public knowledge, all the king’s brown-nosers kicked into high gear. He was summoned to the court to answer an obscure charge of accepting a bribe while Lord Chancellor. When his daughter brought him news that the charge was dismissed, he said «quod differtur, non aufertur» or «that which is postponed is not dropped.» Sir Thomas More was a marked man.

In 1534, Henry enacted a law which declared him supreme ruler of the world, bar none, including the Pope. All citizens were to accept this by oath. More said thanks, but no thanks. Henry threw him into the Tower of London where for a whole year he was locked up, denied pen, paper or books. His wife and children visited and begged him to submit to the oath but More refused on principle. More was questioned several times by friends of the king but he was always careful never to say anything against the King personally; just that he could not stomach the oath required by the Act of Supremacy. It was on May 7, 1535 that More was dragged to trial, charged with treason for failing to take the oath. He could barely walk from his 14-month confinement.

There were seven judges including the new Lord Chancellor, Thomas Audley. More was immediately told that he could even yet take the oath and beg the King’s pardon and be saved. Sir Thomas More declined. More, still one of the country’s best barristers, complained first of his long imprisonment and how he was in no condition to defend himself. A chair was brought in for him and he was allowed to sit down. More made an impassioned defence, saying that he had always told the King his personal opinions when asked. He then complained about the Act which seemed to allow conviction from silence. «Neither can any one word or action of mine be alleged or produced to make me culpable. By all which I know, I would not transgress any law, or become guilty of any treasonable crime for no law in the world can punish any man for his silence. This God only that is the judge of the secrets of the hearts.» And then Sir Thomas More’s trials took a dramatic turn. The King’s solicitor general was sworn in as witness and testified that More has «confessed» to him, in a private conversation in the Tower of London several months earlier. According to Richard Rich, More had linked the King’s supposed «supremacy» with the right of Parliament to depose of the sovereign. How, then, could Parliament depose of a King if he were supreme, More had allegedly asked? This was sensational testimony and would suffice to convict More. More was taken by surprise but put on his bravest face and went on the offensive. «If I were a man, my lords, that has no regards to my oath, (and) I had no occasion to be here at this time, as is well known to every body, as a criminal; and if this oath, Mr. Rich, which you have taken, be true, then I pray I may never see God’s face which, were it otherwise, is an impression I would not be guilty of to gain the whole world.» More did not seem to have a mean bone in his body. Erasmus once said that «What did nature ever create milder, sweeter and happier than the genius of Thomas More? All the birds come to him to be fed. There is not any man living so affectionate to his children as he, and he loveth his wife as if she were a girl of fifteen.» But More faced perjury which could convict him. «In good faith, Mr. Rich, I am more concerned for your perjury than my own danger,» he rebutted. «I must tell you that neither myself nor anybody else to my knowledge ever took you to be a man of such reputation that I or any other would have anything to do with you in a matter of importance. I am sorry I am forced to speak it (but) you always lay under the odium of a very lying tongue.» More’s efforts to discredit Rich were part of the package the jury of 12 took with them to consider. But they soon returned with a verdict: guilty. The Lord Chancellor began to read the sentence when More interjected. «My lord, the practice in such cases was to ask the prisoner before sentence whether he had any thing to offer why judgment should not be pronounced against him.» The Lord Chancellor abruptly stopped his sentence reading and asked More what he was «able to say to the contrary.» More was now on borrowed time. He protested against the charge as best he could. «A son is only by generation. We are by regeneration made spiritual children of Christ and the Pope.» The sentence for treason was then handed down: «That he should be carried back to the Tower of London and from thence drawn on a hurdle through the City of London to Tyburn there to be hanged till he should be half dead; that then he should be cut down alive, his privy parts cut off, his belly ripped, his bowels burnt, his four quarters set up over four gates of the City, and his head upon London Bridge.» When the sentence was read out, More said he may as well speak freely now and revealed that he was totally unable to see the sense of the oath of supremacy. To this, the Lord Chancellor replied that why, then, had so many bishops and academics taken the oath of supremacy? «I am able to produce against one bishop which you can produce, a hundred holy and Catholic bishops for my opinion; and against one realm, the consent of Christendom for a thousand years.» And upon those desperate words, More rejoined that «albeit your lordships have been my judges to condemnation, yet we may hereafter meet joyfully together in Heaven to our everlasting salvation.» Thomas More was then led back to London Tower, but this time with the Tower’s axe before him, pointed edge leading the procession and towards the convict as was the custom. Henry the 8th later commuted the sentence to a quick beheading. The day of execution was July 6, 1535 and the procession left London Tower at nine in the morning. This was a big spectacle for Londoners, a parade of sorts. Persons who had lost law suits before him when he was Lord Chancellor, seized the opportunity to heckle the condemned man. To one wretched woman he yelled back: «I very well remember the case and if I were to decide it now, I would make the same decree.» Brought up to the scaffold, Thomas More said to his executioner. ««Pluck up thy spirits, man, and be not afraid to do thine office. My neck is very short. Take heed, therefore, thou not strike awry for saving thine honesty.»

Sir Thomas More was no more.

His head was stuck on London Bridge where it stayed for several months (his daughter later bought it). When news came of More death, King Henry abruptly left his game of cards and scowled at his new wife Anne Boleyn: «Thou art the cause of this man’s death.» But Henry the 8th, then 44 years old, was still a child and as good an argument one can make against monarchy as can be found in history. He quickly confiscated all of More’s property and forced More’s wife and family to start anew. He even negated special legal assignments that More had devised to provide for his family in case he was executed.

Anne Boleyn was beheaded eleven months after More, on charges of adultery. Henry the 8th went on to marry four more wives, another of which was also beheaded. Henry died in 1547. During his rein, there had been an average of 120 executions a month in England. More was named a Catholic saint in 1866.