Karl Heinrich Marx 
Karl Heinrich was born on May 5th, 1818 in Treves. He died at the age of 64 on March 14th, 1883 in London, England.General Notes
SOURCES: "Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, F.L. Jacquier <Genealogy of Lewis Carroll, Justin Swanstrom, The Royal Families of England Scotland & Wales by Burkes Peerage; Debrett's Peerage & Baronage; Table of descendants French Canadian Genealogical Society>, H.R. Moser <Burke Peerage>, L. Orlandini, O.Guionneau, L.B. de Rouge, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842>, L. Gustavsson, C. Cheneaux, E. Lodge, S. Bontron <Brian Tompsett>, R. Dewkinandan, C. Donadello) http://geneastar.org.
Karl Heinrich and Jenny Von were married in a religious ceremony on June 19th, 1843. They had two sons and three daughters, named Edgar, Henrich Guido, Jenny, Laura and Franziska.
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Children
Jenny Marx
Jenny was born on May 1st, 1844 in Paris, France. She died at the age of 38 on January 11th, 1883 in Paris, France.
Laura Marx
Laura was born on September 26th, 1845 in Brussels, Belgium. She died at the age of 66 on November 26th, 1911.
Edgar Marx
Edgar was born on February 12th, 1847 in Brussels, Belgium. He died at the age of 8 on April 6th, 1855 in London, England.
Henrich Guido Marx
Henrich Guido was born on November 5th, 1849 in London, England. He died at the age of 1 on November 19th, 1850 in London, England.
Franziska Marx
Franziska was born on March 28th, 1851 in London, England. She died at the age of 1 on April 14th, 1852 in London, England.
Karl Heinrich and Helene were married in a religious ceremony in Relationship. They had a son named Frederick.
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Children
Frederick Marx
Frederick was born on June 23rd, 1851 in London, England. He died at the age of 77 on January 28th, 1929.