The Celtic chromosome saw its last days during the six year reign of Edward VI. His young life [died at age 15 years] intertwined with a number religious, social, and economic concerns. He was a pawn between a group of individuals seeking to advance their own goals. The book by Jennifer Loach is a good example, and broad discussion of this period in time.
To be raised a protestant, he became a instrument of many to achieve these ends. However, his half-sister Mary was to follow him, and attempt to return things back to the Catholic faith.
The book is published by Yale University Press, New Haven and London in 1999. The social and religious transition is an important issue in many among the branches of my own family tree. Understanding this important period in history helped me around a number of brick walls.