who discovered titanium

Titanium was discovered in 1791 by William Gregor, a British clergyman and amateur mineralogist, who found titanium-containing minerals in Cornwall, England. He identified a white metal oxide in black sand that he analyzed, which turned out to be titanium in the form of an oxide. Later, in 1795, German chemist Martin Heinrich Klaproth independently discovered the same oxide in a different mineral and named the element "Titanium" after the Titans of Greek mythology, though the discovery credit goes to Gregor. The pure metal was first isolated in 1910 by American chemist Matthew A. Hunter.