This collection of biographies investigates the moral character, intellectual contributions, and spiritual lives of five prominent seventeenth-century English figures. Izaak Walton, a contemporary and acquaintance of his subjects, utilizes personal correspondence, firsthand observations, and historical records to construct detailed portraits of these men. His primary argument posits that the lives of these individuals serve as exemplars of piety, integrity, and scholarly devotion within the context of the English Church and state.

Scholars and literary historians frequently cite this work as a foundational text in the development of English biographical writing. Readers often note the elegant, archaic prose style that reflects the author's deep personal connection to the figures he profiles.