James Clark Ross. By jjones178 Apr 18, 1800 James Clark Ross was born. James Clark Ross was born. Apr 18, 1811 He entered the Navy at the age of 11. Feb 6, 1841 he discovered the Ross Sea in 1841. Period: Mar 1, 1841 to Dec 31, 1841 He discovered the Ross Sea, and named volcanoes Mt Terror and Mt Erebus after the expedition's ships. He discovered the Ross Sea, and named volcanoes Mt Terror and Mt Erebus after the expedition's ships. Jun 15, 1842 James Clark Ross won the 1842 Founders Gold Medal in Jan 1, 1843 He got knighted following his return to England. Apr 3, 1882 James Clark Ross Died. James Clark Ross Died.