He was born the third son of William Monson of South Carlton, Lincolnshire and Elizabeth, daughter of Sir Robert Tyrwhitt of Kettelby.
Most of the heretics recanted, but two Dutchmen, John Peters, and Henry Turnwert, stood firm, and on 22 July were burned at West Smithfield.
In December 1577, Monson gave an extrajudicial opinion in favour of the legality of punishing non-attendance at church by fine.
[1] For questioning the legality of the sentence passed on John Stubbs for his pamphlet against the French match he was committed to the Fleet in November 1579.
He was released in the following February, and had leave to go down into Lincolnshire; nor did he ever resume his seat on the bench, though fines continue to be recorded as levied before him until the middle of Easter term, when he formally resigned.