Karenus Kristofer Thinn (19 December 1850 â 24 March 1942) was a Norwegian judge, born in ÃÂstre Toten Municipality. In 1891, he was a presiding judge (lagmann) in HÃÂ¥logaland, Borgarting and Agder. In 1902, he was appointed extraordinary Supreme Court assessor. From 1909 to 1920, he served as its tenth Chief Justice.