Discovery of Helium

Spectroscopic evidence for the presence of helium in the sun was first obtained during a solar eclipse in 1868. A bright yellow emission line was observed and was later shown to correspond to no known element; the new element was named by J. N. Lockyer and E. Frankland from helios [the Greek word for sun]. Helium was isolated (1895) from a sample of the uranium mineral cleveite by Sir William Ramsay.

http://kryolab.fysik.lu.se/dokument/e_helium.html