Rhys ap Thomas
See also references for related subjects.
Griffiths, Ralph Alan, Sir Rhys ap Thomas and his family: a study in the Wars of the Roses and early Tudor politics, Cardiff: University of Wales Press, 1993.
Fenton, Richard [anonymous], “A short view of the long life of that ever wise, valiaunt, and fortunat commander Rice ap Thomas, knight ... a privie councillor to Henrie VII”, The Cambrian Register 1 (1796): 49–144.  
“The original manuscript, of which this is a copy, was written in the early part of the reign of James the First”.
Journal volume:  Welsh Journals Online: <link>