Sir Robert Tresilian

Robert Tresilian (died 1388) was a Cornish lawyer, and Chief Justice of the King's Bench between 1381 and 1387. He was born in Cornwall, and held land in Tresillian, near Truro. Tresilian was deeply involved in the struggles between King Richard II and the Lords Appellant, and was eventually executed for his loyalty to the king.

Robert Tresilian, Wikipedia

The Lords Appellant were a group of nobles in the reign of King Richard II, who, in 1388, sought to impeach some five of the King's favourites in order to restrain what was seen as tyrannical and capricious rule
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They achieved their goals, first establishing a Commission to govern England for one year from 19 November 1386. In 1387, the Lords Appellant launched an armed rebellion against King Richard and defeated an army under Robert de Vere, Earl of Oxford at the skirmish of Radcot Bridge, outside Oxford. They maintained Richard as a figurehead with little real power.
They had their revenge on the king's favourites in the "Merciless Parliament" (1388). The nominal governor of Ireland, de Vere and Richard's Lord Chancellor, Michael de la Pole, Earl of Suffolk, who had fled abroad, were sentenced to death in their absence. Alexander Neville, Archbishop of York, had all his worldly goods confiscated. The Lord Chief Justice, Sir Robert Tresilian, was executed, as were Sir Nicholas Brembre, Lord Mayor of London, John Beauchamp of Holt, Sir James Berners, and Sir John Salisbury.

Lords Appellant, Wikipedia