Stephen Williamson has been named chairman of the board of directors at T.D. Williamson, a pipeline and services company. Williamson has served on the board since 1977 and most recently held the position of vice chairman. He joined the company in 1971 and has served in various functional and leadership roles during his career. He owned a division of the company based in Canada from 1989 to 2007. Williamson holds a bachelor’s degree in German and history.