Research notebook #2 deals with Welsh history during the Middle Ages. It mostly contains articles written about this period.
Welsh Households For the SCA. By Maredudd ap Cynan.
Wales in the Early Middle Ages. By Wendy Davis.
Pattern of Power in Early Wales. By Wendy Davis.
Medieval Wales. By David Walker.
The Archaeology of The Welsh Marches. By S.C. Stanford.
Information gathered from a series of outstanding articles. Those by Wendy Davies in my opinion are the best source of information for this foundational period in Welsh history.
For a discussion of Welsh genealogy see: http://welshgenealogy.blogspot.com .