Eduardus Grenn was born on April 2nd, 1805, in Lutheria. Shortly after his birth, his mother, Anne Grenn, abandoned him. She was known for having a bad temper and was often in jail. However, his father, Hans Grenn, was a loving and devoted parent who raised Eduardus on his own. Hans was fond of telling imaginative stories about thrilling adventures and great triumphs, often drawing inspiration from his faith.

On September 17, 1816, Hans Grenn passed away, due to the toll that his participation in the Napoleonic Wars had taken on him. He had lost his passion for life and was battling heavy depression. The only thing that kept him going was his 11-year-old son, Eduardus. Hans Grenn was interred at the Lutheran cemetery, while his brother took over the care of Eduardus.