Joseph Franz Von Hasslang 
Joseph Franz Von was born in 1700. He died at the age of 83 on May 28th, 1783.General Notes
SOURCES: "Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, 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, and E. Lodge) http://geneastar.org.
‌Joseph Franz Von and Marie Ernestine Von were married in a religious ceremony on February 26th, 1731. They had a daughter named Maria Johanna Von.
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Children
Maria Johanna Von Hasslang
Maria Johanna Von was born on April 22nd, 1732. She died at the age of 87 on May 11th, 1819.