Bob Callahan was born and raised in Greenwich CT, where he graduated from St. Mary High School in 1963.  He earned a BA in Economics from Fairfield University in 1967, and an MBA from Columbia University in 1969.  He served in the U.S. Army Reserve from 1968-1974, with active duty at Ft Bliss, Texas.  He started his business career as a financial analyst at the IBM manufacturing facility in Endicott NY, from 1969-1972.  In 1973, he joined the newly formed Xerox Latin American Group, with increasing responsibilities in Marketing direction and Operations Support to the affiliate management in each country, including South America, Central America and the Caribbean.  Following his retirement in 2006, he started a second career as a Real Estate agent in the local area.  This has proven to be a rewarding transition, finding success over the past 18 years helping and negotiating for both buyers and sellers of homes and properties.  Bob and his wife Sharon have been together since high school, moved to Darien in October of 1978, and have three sons and five grandchildren, all of whom live in Darien.  Member of the Darien Boat Club, with a 21’ center console the whole family shares and enjoys out on the Sound.