John Cowan is a long time Member of and participant in IB, at No. 3. Though he did not officially join our merry band until early 1998, he was interested in Brithenig and had been in contact with Andrew Smith since 1996; hence his placement at No. 3 in the List.
John maintains the earliest archives of IB related material at <http://mercury.ccil.org/~cowan/sessiwn/> Have a shufty!
He has also been involved in Lojban and Piat.
Vanity Fair said "...he cometh like an apparition in the moonless night to stir the Things best left in peace..."