More may be added to the earlier biography.
While earlier fifteenth-century Yurles at Launceston had been masons,
As his repeated returns to the Commons suggest, Simon Yurle was probably a more important man of law than the otherwise sparse recorded details of his life suggest. Thus, in May 1430 he appeared in the Exchequer at Westminster alongside William Hall, a serjeant-at-law, Nicholas Aysshton*, a future j.c.p., and a servant of the prior of Launceston to place the nine-year-old son of John Arundell* of Bideford (the heir to the extensive estates of his grandfather, Sir John Arundell I*) in the King’s custody.
Around the time of his kinsman Richard Yurle’s first troubles Simon was embroiled in an acrimonious dispute with John Trelawny of Plympton, probably an illegitimate son of Sir John Trelawny†, over pasture rights at Launceston.
Simon’s frequent appearances as an attorney at the Exchequer may be accounted for by the expertise he had gained by his service as a clerk there, and of which his neighbours were eager to avail themselves.
