Peter died peacefully in the comfort of his home in Greensboro, Vt., and in the care of his family.

He was born March 8, 1935, in New York City, the son of the late Francis W. and Elizabeth Summey Roudebush. He graduated from Princeton with a degree in architecture and joined Cloister Inn. He continued his education, studying at École des Beaux-Arts in Genèva, Switzerland. While in Europe, he met and married Michele Jégou. They moved to the Boston area in 1962, eventually separating, after which he married Susan Horner.

Peter was employed by Skidmore, Owings & Merrill, and then Brown Daltas & Associates, where he contributed to the King Khalid Military City in Saudi Arabia. In 1983 he opened his own architectural business, Peter Roudebush & Associates, in Cambridge, Mass., where he focused on designing classic city buildings, including the Cushings addition to the Newport Art Museum. He was passionate about city transportation infrastructure, particularly plans for the Boston North/South Station Rail Link, and served for several years as president of the Association for Public Transportation in Boston.

In 2002 he moved to Greensboro. He loved painting with watercolors, music, cooking, sailing, and carpentry.

He is survived by two sons, three grandchildren, a sister, and one cousin.

Undergraduate Class of 1957