There's not much known about the artist's life. He was Louis Mettling's student; the painter mostly painted still lifes and landscapes, working in Paris and Neuilly-sur-Seine. The painter exhibited at the Salon in 1870 and 1898; he also participated in the first Impressionist exhibition of 1874 with six paintings.
Niels Walseth often used the pseudonym signature Carl Soderberg or others for many of his paintings. His parents were both painters.
He studied at Teknisk Skole (the Technical School).
Walseth was inspired by the famous Peder Mönsted, his subjects often include small fishing villages in Zealand; he extensively traveled to mountainous areas in Austria, Germany, Switzerland
as well as to Italy and Scandinavia.
Niels Walseth - South German landscape with a white farm