This is 1668. These people die in 1668:

    January 6
       Luis de Benavides Carrillo, Marquis of Caracena (b. 1608)
       Magdalene Sibylle of Saxony, Crown Princess of Denmark (b. 1617)
    January 14 – Arnauld de Oihenart, Basque historian and poet (b. 1592)
    January 31 – Hermann Busenbaum, German Jesuit theologian (b. 1600)
    February 2 – Antonio del Castillo y Saavedra, Spanish artist (b. 1616)
    February 8 – Alessandro Tiarini, Italian painter (b. 1577)
    February 21 – John Thurloe, English Puritan spy (b. 1616)
    March 16 – Francis Talbot, 11th Earl of Shrewsbury (b. 1623)
    April 12 – Alexander Daniell, sole proprietor of the Manor of Alverton, Cornwall (b. 1599)
    April 21 – Jan Boeckhorst, Flemish painter (b. c. 1604)
    May 1 – Frans Luycx, Flemish painter (b. 1604)
    May 8 – Catherine of St. Augustine, French nun and nurse of New France (b. 1632)
    May 9 – Otto Christoph von Sparr, German general (b. 1599)
    May 21 – Christoph Delphicus zu Dohna, Prussian-born Swedish soldier, diplomat (b. 1628)
    June 20 – Heinrich Roth, German Sanskrit scholar (b. 1620)
    July 26 – Hans Svane, Danish statesman (b. 1606)
    August 9 – Jakob Balde, German Latinist (b. 1604)
    August 23 – Artus Quellinus the Elder, Flemish sculptor (b. 1609)
    August 24 – Tyman Oosdorp, Dutch brewer and magistrate of Haarlem (b. 1613)
    September 16
       Paolo Emilio Rondinini, Italian Bishop of Assisi (b. 1617)
       Jan Miense Molenaer, Dutch painter (b. 1610)
    September 19 – Sir William Waller, English Civil War general (b. c. 1635)
    October 12 – Zacharias Wagenaer, secretary, painter, then merchant and administrator (Dutch East-India Company) (b. 1614)
    October 13
       Robert Sutton, 1st Baron Lexinton, English politician (b. 1594)
       Algernon Percy, 10th Earl of Northumberland, English military leader (b. 1602)
    November 17 – Joseph Alleine, English non-conformist preacher (b. 1634)
    November 21 – Adolf William, Duke of Saxe-Eisenach (b. 1632)
    December 3 – William Cecil, 2nd Earl of Salisbury, English earl (b. 1591)
    December 14 – Charles Berkeley, 2nd Viscount Fitzhardinge, English politician (b. 1599)
    December 23 – Martin Bauzer, Gorizian Jesuit priest and writer (b. 1595)
    December 24 – Wadham Wyndham, English judge (b. 1609)

I didn't know any of them. Did you?