Peerage Record – 63255

     Diederik Baron van Lockhorst Heer van Maarssen en Ter-Meer was born in 1709 at Utrecht, The Netherlands.¹ He married Maria Catharina van Tuyll van Serooskerken, daughter of Reinoud Gerard van Tuyll van Serooskerken and Isabelle Agneta Hoeufft van Fontaine-Peureuse.¹ He died on 9 March 1755 at Utrecht, The Netherlands.¹

     Isabelle Agnes van Lockhorst was born on 13 February 1742 at Amsterdam, The Netherlands.¹ She was the daughter of Diederik Baron van Lockhorst Heer van Maarssen en Ter-Meer and Maria Catharina van Tuyll van Serooskerken.¹ She married Johan Elias Huydecoper Heer van Maarsseveen en Neerdijk on 26 July 1763 at Maarssen, The Netherlands.¹ She died on 25 December 1764 at age 22 at Amsterdam, The Netherlands.¹

     Johan Elias Huydecoper Heer van Maarsseveen en Neerdijk was born on 8 January 1735 at Utrecht, The Netherlands.¹ He married Isabelle Agnes van Lockhorst, daughter of Diederik Baron van Lockhorst Heer van Maarssen en Ter-Meer and Maria Catharina van Tuyll van Serooskerken, on 26 July 1763 at Maarssen, The Netherlands.¹ He died on 17 February 1808 at age 73 at Maarssen, The Netherlands.¹
     He held the office of Burgomaster of Amsterdam.¹

     Johanna Maria Barones van Tuyll van Serooskerken was born on 28 July 1746 at Slot Zuylen, Zuilen, The Netherlands.¹ She was the daughter of Diederik Jacob van Tuyll van Serooskerken, Heer van Zuylen en Westbroek and Helena Jacoba de Vicq.¹ She married Cornelius Baron de Perponcher Sedlnitsky Heer van Ellewoutsdijk Watervliet Everdingen Coudorpe en Driewegen on 24 April 1763 at Zuilen, The Netherlands.¹ She died on 9 May 1803 at age 56 at The Hague, The Netherlands.¹

     Cornelius Baron de Perponcher Sedlnitsky Heer van Ellewoutsdijk Watervliet Everdingen Coudorpe en Driewegen was born on 3 May 1733 at The Hague, The Netherlands.¹ He married Johanna Maria Barones van Tuyll van Serooskerken, daughter of Diederik Jacob van Tuyll van Serooskerken, Heer van Zuylen en Westbroek and Helena Jacoba de Vicq, on 24 April 1763 at Zuilen, The Netherlands.¹ He died on 27 October 1776 at age 43 at Zuilen, The Netherlands.¹

     Isabelle Agneta Elisabeth Barones van Tuyll van Serooskerken was born on 20 October 1740 at Slot Zuylen, Zuilen, The Netherlands.¹ She was the daughter of Diederik Jacob van Tuyll van Serooskerken, Heer van Zuylen en Westbroek and Helena Jacoba de Vicq.¹ She married Charles Emmanuel de Charrière, Seigneur de Penthaz on 17 February 1771 at Zuilen, The Netherlands.¹ She died on 27 December 1805 at age 65 at Colombier, Switzerland.¹
     Isabelle Agneta Elisabeth Barones van Tuyll van Serooskerken used the pen-name of Belle van Zuylen.¹ She was a writer and composer.¹

     Charles Emmanuel de Charrière, Seigneur de Penthaz was born in 1735.¹ He married Isabelle Agneta Elisabeth Barones van Tuyll van Serooskerken, daughter of Diederik Jacob van Tuyll van Serooskerken, Heer van Zuylen en Westbroek and Helena Jacoba de Vicq, on 17 February 1771 at Zuilen, The Netherlands.¹ He died in 1808.¹

     Hendrik Fagel was born on 7 December 1706 at The Hague, The Netherlands.¹ He married Catharina Anna Sluysken on 1 November 1733 at The Hague, The Netherlands.¹ He died on 19 October 1790 at age 83 at The Hague, The Netherlands.¹

     Catharina Anna Sluysken was born on 11 July 1714 at The Hague, The Netherlands.¹ She married Hendrik Fagel on 1 November 1733 at The Hague, The Netherlands.¹ She died on 5 February 1783 at age 68 at The Hague, The Netherlands.¹

     Maj.-Gen. Diederik Jacob Baron van Tuyll van Serooskerken was born on 6 April 1772 at The Hague, The Netherlands.¹ He was the son of Willem René Baron van Tuyll van Serooskerken Heer van Zuylen en Westbroek and Johanna Catharina Fagel.¹ He married Agnes Margaretha Fagel, daughter of François Fagel and Anne Mary Boreel.¹ He died on 11 April 1826 at age 54 at Halifax, Virginia, U.S.A.¹
     He gained the rank of Major-General in the Imperial Rusisan Army.¹ He fought in the Napoleonic Wars.¹ He held the office of Russian Ambassador to the United States.¹