Died in 1648

Jan 14 Caspar Barlaeus a Dutch polymath and Renaissance humanist, a theologian, poet, and historian.
Jan 15 Francis Ferdinand de Capillas a Spanish Dominican friar who went as a missionary to Asia. He died in China as a martyr. He was canonized by Pope John Paul II on October 1, 2000, as one of the 120 Martyrs of China
Jan 23 Francisco de Rojas Zorrilla a Spanish dramatist. The main pieces of Rojas Zorrilla are Del rey abajo ninguno and No hay padre siendo rey
Feb 2 George Abbot (author) an English writer, known as "The Puritan" and a politician who sat in the House of Commons in two periods between 1640 and 1648.
Feb 22 Wilhelm Lamormaini a Jesuit theologian, and an influential figure as confessor of the Habsburg emperor Ferdinand II during the Thirty Years' War.
Feb 28 Christian IV of Denmark a monarch of the House of Oldenburg who ruled as King of Denmark-Norway from 1588 to 1648. His reign of more than 59 years is the longest of all Danish monarchs
Mar 12 Tirso de Molina a Spanish Baroque dramatist, a poet and a Roman Catholic monk.
Mar 14 Ferdinando Fairfax 2nd Lord Fairfax of Cameron an English politician who sat in the House of Commons at various times between 1614 and 1648. He was a commander in the Parliamentary army in the English Civil War
May 19 Stefan Potocki a Polish nobleman, starosta of Nizhyn of the Potocki family.
May 20 Władysław IV Vasa a Polish and Swedish prince from the House of Vasa. He reigned as King of Poland from 8 November 1632 to his death in 1648
May 26 Vincent Voiture the son of a rich wine merchant of Amiens. He was introduced by a schoolfellow, the count Claude d'Avaux, to Gaston, Duke of Orléans, and accompanied him to Brussels and Lorraine on diplomatic missions
Jul 4 Antoine Daniel a Jesuit missionary at Sainte-Marie among the Hurons, and one of the eight Canadian Martyrs.
Aug 18 Ibrahim of the Ottoman Empire the Sultan of the Ottoman Empire from 1640 until 1648. He was born in Istanbul the son of Ahmed I by Valide Kösem Sultan, an ethnic Greek originally named Anastasia. He was later called Ibrahim the Mad by twentieth century historians due to his reputed mental condition
Aug 20 Edward Herbert 1st Baron Herbert of Cherbury an Anglo-Welsh soldier, diplomat, historian, poet and religious philosopher of the Kingdom of England.
Aug 25 Joseph Calasanz Sch.P. also known as Joseph Calasanctius and Josephus a Matre Dei, was a Spanish Catholic priest, educator and the founder of the Pious Schools, providing free education to the sons of the poor, and the Religious Order that ran them, commonly known as the Piarists. He is honored as a saint by the Catholic Church
Aug 28 Charles Lucas an English soldier, a Royalist commander in the English Civil War.
Sep 1 Marin Mersenne a French theologian, philosopher, mathematician and music theorist, often referred to as the "father of acoustics". Mersenne was "the center of the world of science and mathematics during the first half of the 1600s."
Oct 11 George I Rákóczi an important Hungarian nobleman who was Prince of Transylvania from 1630 until his death in 1648. During his influence Transylvania grew politically and economically stronger
Oct 15 Simone Cantarini an Italian painter and etcher of the Bolognese School of painting.
Nov 17 Thomas Ford (composer) an English composer, lutenist, viol player and poet.
Nov 25 Daišan an influential Manchu prince and statesman of the Qing Dynasty.
Dec 25 Claudia de' Medici Regent of the Austrian County of Tyrol during the minority of her son from 1632 until 1646. She was a daughter of Ferdinando I de' Medici, Grand Duke of Tuscany and Christina of Lorraine. She was born in Florence, and was named after her grandmother Claude of Valois, herself granddaughter of Claude, Duchess of Brittany, consort to King Francis I of France