Countess Karoline Friederike Cäcilie Klothilde von Wartensleben was a German noblewoman. She was a paternal great-great-grandmother of King Willem-Alexander of the Netherlands. She was a daughter of the 1841 marriage of Count Leopold von :File:Wartensleben-Gr-Wappen.png|Wartensleben with Mathilde :de:Bohlen und Halbach#Halbach familie|Halbach, daughter of Arnold Halbach, an American industrialist whose family fortune became important in German munitions, but the question of her hereditary rank became an important issue in a 1905 dispute over succession to the throne of the principality of Lippe.
Marriage
On 16 September 1869 in Neudorf in the Province of Posen, she married Ernest II, Count of Lippe-Biesterfeld, who was regent of Lippe from 1897 to 1904. In the Lippe succession dispute, Schaumburg-Lippe claimed that Karoline, who belonged to a non-reigning family of Germany's lower nobility elevated to the rank of Graf in the 18th century, was of insufficiently high rank by birth to be a dynastic consort for a Count of Lippe — potentially rendering her sons ineligible to succeed to the throne of the Lippe principality. On 25 October 1905 the German Empire's arbitration panel accepted an 1897 arbitration panel's finding that until at least 1815 marriages between the House of Lippe and untitled persons, if of old rather than recent noble status, were eligible to marry Lippe prince and counts dynastically. This was based on the finding that, such marriages, having been banned neither by previous house law nor by any clear marital pattern to the contrary prior to 1815, and that no change in dynastic policy had been explicitly implemented subsequently, the 1869 marriage to a Wartensleben countess was valid for purposes of transmitting succession rights to the descendants. Thus Karoline's children with the regent of Lippe, Count Ernest, became dynasts and the Schaumburg-Lippe Prince desisted his formal opposition. The monarchs, courts and legislatures of Germany accepted the decision and her eldest son was immediately recognised as Leopold II, sovereign Prince of Lippe,> reigning until compelled to abdicate in 1918 when the German Empire collapsed following the loss of World War I.
Issue
Ernest and Karoline had six children; they were all titular counts and countesses of Lippe-Biesterfeld at birth; the ruling in 1905 made them princes and princesses of Lippe.
