Here are some more good biographies of people from the Reformation:

Pierre Viret: The Smile of the Reformation – Douglas Wilson (DG)

Lady Jane Grey: The Teenage Martyr – Scott Hubbard (DG)

Theodore Beza: The First Calvinist – Shawn Wright (DG)

Zacharius Ursinus – The Happy Professor – Thomas Kidd (DG)

Johannes Bugenhagen: The Administrative Pastor – Betsy Howard (DG)

Katharina von Bora: The Runaway Nun – Kristin Tabb (DG)