BSP (Bigland) has the following entry "Richard Sheldon of Rowley Regis, aforesaid son and heir, 4th Edward anno 1464" I am still not clear what this date referes to. I presume it must be his death, or possibly the date of his father's death when he became the heir to the estate.
Toke-Nichols pedigree gives Richard's wife as daughter and co-heir of "(blank) Freeding" (I think - not clear) Esq.
Mawde, his daughter apperas to have been born around 1400, marries William Colbrand, but I am not aware of any offspring.