TV-Series
Description
Ernst Robinson is the second eldest son and middle child of the Robinson family, situated between his older brother Fritz and younger brother Francis. His family was en route from Bern, Switzerland, to the German colony of New Guinea, seeking refuge from Napoleon Bonaparte’s European conquest, when their ship was attacked by pirates and wrecked in a storm, leaving them stranded on an uninhabited island.

Thoughtful and studious by nature, Ernst maintains a keen interest in natural history and science, which aids the family’s survival. This intellectual curiosity is tempered by a occasional tendency toward indolence, a trait his father addresses by assigning him specific tasks and responsibilities. Ernst also serves as the family’s chronicler, diligently recording their adventures in his diary.

His relationship with his older brother Fritz is complex, marked by frequent clashes over their differing approaches to challenges. These disagreements sometimes escalate into verbal and physical confrontations, as Fritz’s impulsive, action-oriented style conflicts with Ernst’s cautious and theoretical nature.

In certain adaptations, Ernst develops romantic feelings for Emily Chan, a fellow shipwreck survivor and wealthy heiress who gradually grows more compassionate. In the 1960 film version, he and Fritz become rivals for the affections of Roberta, a girl who had disguised herself as a cabin boy. Their competition leads to a physical fight requiring paternal intervention. Ernst attempts to win Roberta over through displays of knowledge and intelligence, contrasting with Fritz’s physical charm.

Ernst contributes to the family’s survival through practical inventions and constructions. He assists in designing and building an elaborate treehouse equipped with modern amenities such as a water wheel and food preservation systems. He also takes part in salvaging supplies from the shipwreck and helps fortify a rocky clifftop with defenses and booby traps in anticipation of a pirate attack.

After the family is rescued by a British ship, Ernst must decide his future. In the 1960 film narrative, he chooses to leave the island and enroll in a university in England, pursuing further education while his family remains behind. This contrasts with the original novel, in which his character, named Ernest, stays on the island with most of the family while Fritz returns to Europe.