Ancestry of Richard Haines of Aynhoe Solved ?

I have spent the better part of the last year attempting to determine the ancestry of Richard Haines and after many long nights I believe I may have solved the riddle. I now believe Richard Haines of Aynhoe was of Welsh descent,  a direct descendant of the royal house of Powys. The clues were found in several books written about Richard in the early to mid 20th century.

In one book titled "Richard Haines and his Descendants, a Quaker Family by John Wesley Haines published in 1966 I found the first clues. On Page 15 the book spells the name of the man we now know to be Richards 3rd great grandfather, the father of Nicholas,  as Richard Heynes, a welsh spelling. And again on page 319 the book gives a welsh genealogy of a Richard Heynes that the author speculates could be the ancestor of Richard Haines of Ayhoe since a Richard Heynes relocated from Shropshire to Charlebury, Oxfordshire not far from Aynhoe. After a careful review of the dates it now appears that the Richard Heynes who relocated from Shropshire to Charlebury, Oxfordshire and Richard Heynes, father of Nicholas Haynes were indeed the same person.   

(It is interesting to note that Nicholas Haynes and his brother William were both Yeoman of the guard (body Guards) to Queen Elizabeth I. This is significant because Elizabeth I was from the house of Tudor and was of Welsh descent. Given the dangerous time in which she lived, being in open conflict with the Pope, it would not be surprising if Elizabeth I wanted Welshman among her personal protectors).  

Another important clue came from a careful review of the names of the immediate family members of Richard of Aynhoe and the Richard that relocates to Oxfordshire. The father of the Richard that relocates to Oxfordshire was named John and he had brothers named William and Thomas. Richard of Aynhoe had sons named John, William and Thomas. I think this is important since names are often repeated from generation to generation within the same families.

Another clue is the fact that the nephew of the Richard who relocated to Oxfordshire married Elizabeth Neville, daughter of Sir Edward Neville. And according to some genealogies, a Joan Neville was the mother of Ann Elcock, wife of Nicholas Haynes,.and the cousin of Elizabeth Neville. This would mean that the families of both Richards married into the Neville family. It is also interesting to note the Neville family at one time owned the land on which Aynhoe is located.

The final clue came from a book titled " A complete memoir of Richard Haines (1633-1685) a forgotten Sussex worthy" writen by Charles Reginald Haines and published in 1903. Ironically this book is not about Richard of Aynhoe but another Richard Haines who was probably a cousin of Richard of Aynhoe. At the beginning of his book the author gives a COA of the Haines family. This is the same COA used by Richard Haines of Aynhoe's great-great grand father Nicholas Haynes, son of Richard Heynes. On page 138 of his book the author states that the origin of the 3 crescents on the Haines COA is not known and he speculates that they may be a variation of bezants or plates signifying the same thing. Since the genealogy given in the first book I referenced suggested a welsh descent from the Kings of Powys, I compared the COA of the kingdom of Powys to the Haines COA. The results were startling. I have included both the COA of Powys and Haines so everyone can make their own comparison.  

I would love to hear some feedback from those of you who are interested in the genealogy of Richard Haines of Aynhoe.