Louis VII was Landgrave of Hesse-Darmstadt from April 1678 until his death in August of that year. Wikipedia
Born: June 22, 1658, Darmstadt, Germany
Died: August 31, 1678 (age 20 years), Gotha, Germany
Great-grandparents: Louis V, Landgrave of Hesse-Darmstadt, Magdalene Sibylle of Prussia, John George I, Elector of Saxony, and more