As The Fourth Man

      The children of Tudor Trevor (JC-1) and Anghard (JC-2) would be the fourth generation down from the top of this family tree. Of these, there were three sons and one daughter all born between 934 AD. and 950 A.D. The Welsh laws of the day recognized the fourth male as having "Claims by Proprietary Right". On page 104 of Hywel Dda The Law" it states: 

       "Whosoever wants to claim land by kindred and descent, let him show his pedigree as the stock from which he derives; and if he is there as fourth man he is a proprietor, for it is as fourth man that a person becomes a proprietor."

      In the "GLOSSARY AND INDEX TO NOTES" page 375, a proprietor is explained "...for the holder of the fullest admissible right to land...". [for a review of this book see post of April 4th, 2022] Now, the following figure gives the family tree being discussed, and it shows the names of the children of Tudor Trevor (JC-1).

      Gronwy (JD-1) is the eldest male child. His symbol is colored pink, and from this point onward, or downward, his line of descent will be enclosed as pink.  Llydocka (JD-2) who takes his name from his grandfather on his mother's side Lludoca (JA-3) is outlined in orange. Likewise, from this point forward, his line of descent will take the color orange. Now, the baby of the family is Dingad (JD-3). He has special affinity, since I am the baby of my nuclear family, and I know what it is growing up with older brothers. His color is blue, and his line of descent will be marked blue. It is Dingad, as a fourth man, that my own Jones family is connected to this first four generations of my Welsh ancestors. 

      The daughter Rhingor (JD-4) is to be given in marriage, and becomes a member of her husband's kindred. Not forgotten, but her line of descent becomes that of her adopted family. Please note that in Dwnn, p. 307, the daughter, Rhingor, is named Arddyn who marries a fellow named Gwrydr hen.