German Nobility. He was the last of a Swedish branch of a German noble dynasty. Born the grandson of Swedish Field Marshal Hans Christoff von Königsmarck and brother of Aurora von Königsmarck, he is most known for his love affair with Sophie Dorothea of Celle, the wife of Elector Georg Ludwig, who later became George I King of Great Britain and Ireland on August 1, 1714. In 1681 he visited, with his mother, the court of Celle for a few weeks where he met Sophie Dorothea for the first time. A few years later, he met the future Friedrich August I of Saxony in Venice, and went with him to Dresden to live at the court there. In 1688 he returned to Hanover, where he fell in love with Sophie Dorothea. The couple's love letters from a six-year relationship have been archived at University of Lund in Sweden. They planned to flee from Hanover to live in Dresden under the protection of Friedrich August. During the night of July 1, 1694, Königsmarck entered the palace and was never seen again. Sources state he was assassinated at the request of George Ludwig on July 2, 1694. Aurora and Friedrich August attempted to learn what happened that night, but were unsuccessful. According to some information, Duke Anton Ulrich of Brunswick-Wolfenbüttel gathered Königsmark's body after being assassinated, sinking his remains in the Leine River in a sack weighted with stones. Sophie Dorothea was divorced from Georg Ludwig later that year and was banished to live at the Castle of Ahlden where she was guarded for the rest of her life, not allowed to remarry or to ever see her children again. At the time of her death, she was nearly 61 years old and had been imprisoned for almost 32 years of her life. During a renovation project in Leineschloss Castle in August of 2016, bones were found, which were speculated to be his remains, but that subsequent tests proved that some of the bones were from animals, while the human bones came from at least five different skeletons and none his.