George Nicolas de Roerich (1902-1960) was a prominent 20th century Tibetologist. His name at birth was Yuri Nikolaevich Rerikh. George's work encompassed many areas of Tibetan studies, but in particular he is known for his contributions to Tibetan dialectology, his monumental translation of the Blue Annals, and his 11-volume Tibetan-Russian-English dictionary (published posthumously).
George was the son of the painter and explorer Nicholas Roerich and Helena Roerich. (Wikipedia)