Scotch opinion at the time, and for generations afterwards, universally imputed the crime to him.
Fordun, who wrote in the reign of Robert Bruce, Bowyer, and Langtoft, all Scotch historians, say that it was he who betrayed Wallace, and their account is confirmed by contemporary English writings.

The Chronicle of Lanercost, the Arundel MSS., written about the year 1320, and the Scala Chronica, all distinctly say that Wallace was seized by Sir John Menteith; and finally, Sir Francis Palgrave has discovered in the memoranda of the business of the privy council that forty marks were bestowed upon the young man who spied out Wallace, sixty marks were divided among some others who assisted in his capture, and that to Sir John Menteith was given land of the annual value of one hundred pounds--a very large amount in those days.
The manner in which Wallace was seized is uncertain; but he was at once handed by Sir John Menteith to Sir John Seagrave, and carried by him to London.

He was taken on horseback to Westminster, the mayor, sheriffs, and aldermen, with a great number of horse and foot, accompanying him.

There the mockery of a trial was held, and he was in one day tried, condemned, and executed.

He defended himself nobly, urging truly that, as a native born Scotsman, he had never sworn fealty or allegiance to England, and that he was perfectly justified in fighting for the freedom of his country.
Every cruelty attended his execution.