The son of who was a German botanist, horticulturist, and microscopist, who joined the Schleswig-Holstein army to fight the first round of military conflict in southern Denmark and northern Germany rooted in the Schleswig-Holstein Question?
Johannes Groenland Johannes Groenland (also spelled Grönland and called "Jean Groenland," 1824 - 1891) was a German botanist, horticulturist, and microscopist. He was born April 8, 1824 in Altona, a borough of Hamburg that was part of the Duchy of Holstein at that time. He was the son of Johann Friedrich Grönland, a German organist and music teacher. Groenland was trained in pharmacology in his youth and served as a pharmacist in Altona, Hamburg, and Jena in his early 20s. In 1849 he joined the Schleswig-Holstein army to fight in the First Schleswig War. After the war, Groenland moved to Paris to work as an assistant to Louis de Vilmorin, a French biologist and horticulturist who was also a member of the family firm Vilmorin-Andrieux. While working for Vilmorin, Groenland worked with Theodor Rümpler to prepare the German edition of "Les fleurs de pleine terre" ("Vilmorin's illustrierte Blumengärtnerei").
Cornelis Tromp Cornelis Maartenszoon Tromp (3 September 1629 – 29 May 1691) was a Dutch naval officer. He was the son of Lieutenant Admiral Maarten Tromp. He became Lieutenant Admiral General in the Dutch Navy and briefly Admiral General in the Danish Navy. He fought in the first three Anglo-Dutch Wars and in the Scanian War.