Thomas Hickman-Windsor, 1st Earl of Plymouth, PC (c. 1627 – 3 November 1687), was the son of Dixie Hickman and his wife Elizabeth Windsor, sister and heiress of Thomas Windsor, 6th Baron Windsor. He assumed the additional surname of Windsor and succeeded to the Windsor family's estate around Hewell Grange near Redditch in 1645. The same year he distinguished himself in the Battle of Naseby. Hickman-Windsor impressed King Charles I by relieving his garrison at High Ercall.