Hermanus Koekkoek II Jr. 1836-1909 Breda Signed with the pseudonym 'J. van Couver', Hermanus Koekkoek Jr. deliberately chose the pseudonym J. van Couver to avoid confusion with his father, also named Hermanus Koekkoek. Moreover, this choice gave him the freedom to develop his own artistic identity within the famous Koekkoek dynasty. Oil on panel 57 x 82.5 cm (76 x 101.5 cm framed) RKD Hermanus Koekkoek Jr. learned to paint from his father Hermanus Koekkoek (1815-1881). In 1869, he moved to London where he opened an art dealership on Piccadilly. In London, Hermanus Koekkoek Jr. signed his work with the pseudonym J. van Couver. As a painter, he focused primarily on seascapes, river scenes, and beach scenes, in the romantic-realist style that also characterized the work of most of his family members. He had a preference for scenes in which ships were busy maintaining their course on the turbulent waves. His later work is less romantic and clearly shows influences of the Hague School. During his London period, he often worked under the pseudonyms Jan van Couver and Louis van Straaten. He regularly collaborated with painter Lion Schulman (1851-1943). Hermanus Koekkoek the Younger (Amsterdam, December 8, 1836 - London, May 1909[1]) was a Dutch painter, best known for his seascapes. He also worked under the pseudonyms Jan van Couver and Louis van Straaten.