King of England, Scotland, and Ireland (born 1600) from 1625 until his execution in the wake of the English Civil War in 1649. Following the Protectorate rule of Oliver Cromwell and his son, Richard, Charles's line was restored to the throne with the succession of his son, Charles II, in 1660, whose reign was retroactively dated to 1649. Desirable LS in Latin, signed “Carolus R.,” one page, 7.75 x 11.25, March 25, 1637. Letter to Prince Ferdinand the Second, Grand Duke of Etruria, in part (translated): "O most serene Prince, O dearest kinsman, gladly indeed we have learned from our reunited kinsman, the Count of Arundella and Suria, and from Count Morescallus of Anglia and recently from our ambassador extraordinary to Caesar, how eagerly your Serva Celsa has tried to promote the task of the restitution of the Palatine Elector of my nephew through your wise prolegate, Ugolinus Prissonius. Whence although for him your efforts and likewise mine have been wholly in vain, yet we have not been able to refrain from bearing witness to your most exalted servant in what gratitude we hold the proofs of your benevolence towards us and ours, and to you in his name and from expressing our most hearty thanks and from repaying whatever obligations are pleasing to friendship. May God bless and prosper your servant Celsa!" In fine condition, with multiple intersecting folds and minor paper loss to the upper left corner; the integral address leaf is detached but present. Accompanied by an English translation.Format: LS