William Poser
William J. Poser is a Canadian-American linguist who is known for his extensive work with the historical linguistics of Native American languages, especially those of the Athabascan family.
He got his B.A. from Harvard in 1979 and his Ph.D. from MIT in 1985, his dissertation being about suprasegmental phenomena in the phonology of Japanese. He then taught at Stanford, and then at the University of Northern British Columbia. He has published extensively about the Carrier language in which he has done ample fieldwork. He is also known as a frequent blogger at the Language Log.