Gulielmus Oughtred Anglus (frontispiece from Oughtred's "The Key of the Mathematicks New Forged and Filed," 1647) 1646

This etching, created by Wenceslaus Hollar in 1646, is a portrait of the English mathematician William Oughtred. Titled "Gulielmus Oughtred Anglus," it was originally a frontispiece for Oughtred’s book "The Key of the Mathematicks New Forged and Filed". The image depicts the scholar in his later years, holding a book, likely a copy of his own work. The engraving is a testament to Hollar's mastery of detail, showcasing the scholar’s wrinkles and the texture of his clothing. The inscription at the bottom provides information about Oughtred's age and the year of the portrait. This artwork serves as a record of both the individual and the intellectual pursuits of the era.