James D Taylor Jr. 
Henry Grey, 3rd Marquis of Dorset, 2nd Duke of Suffolk (c.1500-1554) 

Historian James D. Taylor gathers in one volume all known historical information regarding Henry Grey, father of Lady Jane Grey. Descended from a distinguished and noble heritage that produced two queens, Henry Grey gave up a comfortable, quiet and leisurely life to become one of the most powerful and influential men in England next to the king. His influence was so strong that, working in alliance with the Duke of Northumberland, he was able to coerce the young King Edward VI, on his deathbed, to change the order of succession to place Lady Jane Grey on the throne when Edward died, making Henry Grey the father of the Queen.