Dafydd (Dave) Rhys Williams (b.1954-05-16 in Saskatoon, Saskatchewan,) flew on space shuttle mission STS-90 after being selected as a Canadian astronaut in 1992. Williams did his formal studies at McGill University, including an M.D. He has focussed on medical aspects of space flight. As a physician, he has focused on medical aspects of space flight. The Canadian Space Agency's website has an official biography.
Name proposed and citation prepared by Peter Jedicke and Robert Jedicke.
Reference: MPC 49098