Punctuation and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed.

Simple typographical errors were corrected; occasional unbalanced quotation marks retained.

Ambiguous hyphens at the ends of lines were retained.

Page 35: Unmatched closing single quotation mark after "is a traitor'".

Page 43: "David ap Griffith" means "son of" (Welch origin).