Louis IV of Hesse-Darmstadt was a German nobleman who reigned as the Grand Duke of Hesse from 1877 until his death in 1892. Born on June 9, 1837, he was the son of Louis III, Grand Duke of Hesse and Princess Wilhelmine of Baden. His reign was marked by modernization efforts in his territory, including improvements in infrastructure and education. Louis IV was known for his interest in the arts and sciences, promoting cultural development in Hesse-Darmstadt. He was also involved in various charitable activities and supported the establishment of institutions that benefited the public. His leadership contributed to the stability and growth of the region during a time of significant change in Germany.