Start with high-confidence 16th century history books, then narrow by subgenre or adjacent topics.
The Seventeenth Century
Andrew Lossky
Rebel in the Ranks
Brad S. Gregory
The Northern Crusades
Eric Christiansen
The Dutch Republic
Jonathan Israel, Jonathan I. Israel
The Ornament of the World
Maria Rosa Menocal, María Rosa Menocal
The History of the Medieval World
Susan Wise Bauer
Witchfinders
Malcolm Gaskill
First Asians in the Americas
Diego Javier Luis
What God Kept for Himself
Umberto Grassi
The Uskoks of Senj
Catherine Wendy Bracewell, Wendy Bracewell
Religion and Trade in New Netherland
George L. Procter-Smith
The Reformation of the Sixteenth Century
Roland Bainton, Jaroslav Pelikan
Curious Land
D. E. Mungello, David E. Mungello
Conquistadores
Fernando Cervantes
The Faithful Executioner
Joel F. Harrington
Dominion
Tom Holland
1616
Thomas Christensen
The Awakening of Europe
M. B. Synge, Margaret Bertha Synge
A Hangman's Diary
Franz Schmidt, Albrecht Keller
El Cid
Nora Berend
Inside the Stargazer's Palace
Violet Moller