John would not confess to being a priest immediately so he had to spend a week in Newgate Prison until his trial.

It was on September 4^th , the day of John’s trial that he admitted to being priest.  The jury decided that his punishment was death by hanging.   He was taken to Tyburn and was martyed on the 7th September 1644 with Blessed Ralph Corby.  The story goes that they were both told that there had been a reprieve obtained for one of them.  They each refused it and insisted that the other should be freed, but neither was.

John Duckett was hung, drawn and quartered at Tyburn on September 7^th , 1644.  He was 31 years old and had been a priest for only five years. His hand and some of his clothing were recovered as relics, but as they had to be hidden,  no-one knows where they are to be found.