I can provide a number of narrative research sheets on Richard de Redvers, Lord Vernon and later Earl of Devon, his Norman ancestry, parents and his descendants. This is all typed in Microsoft Works (.wsp). Let me know if you can open Works, which is often a problem for those with older software. If you cannot open Works I can convert it to a file that is readable, but does not have the neat look of the Works process.
I also have several PDF sheets on three castles in Devon where Richard de Redvers/Vernon was either the founder or lord in residence.
Also one PDF page on the Vernon family from the 1848 book The Roll of Battle Abbey.