 Johann Eybert Gossler was the father of, among others, the banker Johann Hinrich Gossler (1738–1790) and Johann Jacob Gossler (1758–1812), who served as a French colonel during the Napoleonic Wars and who died during the French invasion of Russia.The banker Johann Hinrich Gossler (1738–1790) started as an apprentice at Berenberg Bank; after marrying the sole heir to the company, Elisabeth Berenberg (1749–1822), he was named a partner in 1769 by his father-in-law Johann Berenberg and became the bank's sole owner upon the latter's death in 1772.In 1788 Gossler accepted his own son-in-law L.E.