The earliest date of admission to the Middle Temple was about 1451. The Register of Admissions begins under the title "Admissions prior to July 7, 1501. The first JONES admitted in dated 24 November, 1565. He is listed as "...William Jones, son of John Mirydeth of Bergevennye, Mounth, gent."
The JONES surname is abstracted.
Here is an example of the Welsh taking the surname JONES with father being "Mirydeth" [Meredith]. William would be William ap John "Mirydeth" becoming William Jones vs William Meredith!
For an application of this content see under http://thejonessurname.blogspot.com :
"First JONES to Middle Temple 1565" dated Tuesday, Dec. 6, 2011 .