how was titanium discovered

Titanium was discovered in 1791 by William Gregor, a clergyman and amateur geologist from Cornwall, Great Britain. He found a black sand in the Manaccan valley which was magnetic due to iron oxide, but also contained an unknown white metallic oxide. On analyzing this sand, he realized it contained a new metal and initially named the oxide "manaccanite" after the location where it was found. However, the element itself was not isolated in pure metallic form at that time. In 1795, the German chemist Martin Heinrich Klaproth independently rediscovered this element while examining the mineral rutile from Hungary. He confirmed it was a new element and named it "titanium" after the Titans of Greek mythology. Klaproth acknowledged Gregor's earlier discovery after obtaining his samples. Pure titanium metal was not produced until 1910 by Matthew A. Hunter in the United States by reducing titanium tetrachloride with sodium, and commercial production advanced with the Kroll process in the 1930s, which uses magnesium to reduce titanium tetrachloride.