He was a high churchman and an active member of ‘The Independent Electors of Westminster,’ a club of Jacobite sympathies. In Nov. 1745 he went from Pen-y-graig to Spetchley, near Worcester, where he met William Vaughan of Courtfield. Together they proceeded through Staffordshire to Leigh in Lancashire, and on to Preston where they joined the Young Pretender. Morgan was given a position of trust in the rebel force, and was known as the ‘Prince's Counsellor.’ On reaching Manchester he aided in raising the Manchester Regiment, and was offered its command, but he declined on the ground that he was not a military man. (Nevertheless, at his trial he said that he had ‘served the crown of England in two campaigns with some reputation’). During the advance into England he was active in superintending the search for arms.
When the prince retreated from Derby Morgan accompanied him for one day as far as Ashbourne, but then left the army and was soon arrested at Stone. On his capture he stated that it had been intended to march through Warwick to Oxford, where the students would have joined the prince, thereby attaching their families to him, and this may well have been Morgan's advice in the heated discussions before the prince determined to retreat. Morgan remained in Newgate gaol till his trial and condemnation on 22 July 1746. Eight days later he was put to death on Kennington Common with all the barbarity of executions for treason. His political faith is embodied in a paper handed by him to the sheriff of Surrey before execution and printed by Llewellin (see below).
Emeritus Professor David Williams, D.Litt., (1900-78), Aberystwyth