Taum Santoski
From Tolkien Gateway
Taum Santoski (1958-August 19, 1991, aged 32) was a prominent member of the Elvish Linguistic Fellowship. He assisted Christopher Tolkien with the History of Middle-earth series, and planned to do a similar book on the writing process of The Hobbit himself, but died of cancer before he could finish it. The work was continued and published by John D. Rateliff.
Vinyar Tengwar 19 was dedicated to his memory, and featured an editiorial In Memoriam by Patrick H. Wynne, in which his perseverance, generosity and enthuisiasm was praised.