Who Found Yttrium?

Who Found Yttrium? Elemental yttrium, in an impure form, was first isolated in 1828 by Friedrich Wöhler by passing chlorine gas over the gadolinite mineral to form anhydrous yttrium chloride (YCl3), which was in turn reduced to yttrium using potassium3. How was yttrium discovered? Elemental yttrium, in an impure form, was first isolated in 1828