Died in 1601

Jan 11 Scipione Ammirato an Italian historian.
Jan 29 Louise of Lorraine a member of the House of Lorraine who became Queen consort of France from 1575 until 1589. Born in Nomeny in the Duchy of Bar, she was the daughter of Nicholas, Duke of Mercœur, and Margaret of Egmont
Feb 25 Robert Devereux 2nd Earl of Essex an English nobleman and a favourite of Elizabeth Politically ambitious, and a committed general, he was placed under house arrest following a poor campaign in Ireland during the Nine Years' War in 1599. In 1601, he led an abortive coup d'état against the government and was executed for treason
Feb 27 Anne Line an English martyr who was executed during the reign of Elizabeth I for harbouring a priest.
Apr 10 Mark Alexander Boyd a Scottish poet and soldier of fortune. He was born in Ayrshire, Scotland. His father was from Pinkell, Carrick in Ayrshire. Boyd left Scotland for France as a young man. There he studied civil law. He took part in the religious wars of the League, fighting on the Catholic side
May 5 Jacob Willemsz Delff a portrait painter active in Delft. He is known by a picture of an 'Archery-feast' in the Hotel de Ville at Delft, dated 1592; and by a Reconciliation of Esau and Jacob, in the Belvedere at Vienna, bearing the date 1584. He also painted The Sportsman's Dinner, and a portrait group of his family. His works display good conception and execution, but are somewhat heavy in colouring
May 19 Costanzo Porta known today as the Venetian School. He was highly praised throughout his life both as a composer and a teacher, and had a reputation especially as an expert contrapuntist
Jun 24 Henriette of Cleves a French noblewoman and heiress of the Cleves-Nevers family. She was also known as Henriette de La Marck. She became the "suo jure" 4th Duchess of Nevers and the "suo jure" Countess of Rethel, upon the childless death of her brother, James of Cleves, Duke of Nevers and Count of Rethel, in 1564. She was the wife of Louis I Gonzaga, Duke of Nevers, 1st Duke of Rethel, and Prince of Mantua. Following her marriage she became the Duchess of Rethel and Princess of Mantua
Jun 25 Peregrine Bertie 13th Baron Willoughby de Eresby the son of Catherine Willoughby, 12th Baroness Willoughby de Eresby, and Richard Bertie. Bertie was Lady Willoughby de Eresby's second husband, the first being Charles Brandon, Duke of Suffolk. Peregrine Bertie's half-brothers, Henry and Charles Brandon, died as teenagers four years before his birth. His sister Susan married the Earl of Kent and then the nephew of Bess of Hardwick. Owing to religious politics, the parents had to move outside England and the boy was born at Wesel on the River Rhine
Aug 9 Michael the Brave the Prince of Wallachia , of Transylvania , and of Moldavia. He united the three principalitiesnote 1 under a single rule for a short period of time
Aug 31 Gian Vincenzo Pinelli an Italian humanist, born in Naples and known as a savant and a mentor of Galileo. His literary correspondence put him at the center of a European network of virtuosi. He was also a noted botanist, bibliophile and collector of scientific instruments
Oct 24 Tycho Brahe a Danish nobleman known for his accurate and comprehensive astronomical and planetary observations. He was born in Scania, then part of Denmark, now part of modern-day Sweden. Tycho was well known in his lifetime as an astronomer, astrologer and alchemist, and has been described more recently as "the first competent mind in modern astronomy to feel ardently the passion for exact empirical facts."