Margaret Cavendish, Duchess of Newcastle-upon-Tyne was a prolific English philosopher, poet, scientist, fiction writer and playwright. In her lifetime she produced more than 12 original literary works, many of which became well known due to her high social status. This high social status allowed Margaret to meet and converse with some of the most important and influential minds of her time.

Sir Charles Lucas, 1613 to 28 August 1648, was a professional soldier from Essex, who served as a Royalist cavalry leader during the Wars of the Three Kingdoms. Taken prisoner at the end of the First English Civil War in March 1646, he was released after swearing not to fight against Parliament again, an oath he broke when the Second English Civil War began in 1648. As a result, he was executed following his capture at the Siege of Colchester in August 1648, and became a Royalist martyr after the 1660 Stuart Restoration.