DeCoste, Mary A. (Koch), of Marshfield, passed away on July 17, 2016 at the age of 84. Mary is the beloved wife of the late William F. DeCoste and the loving mother of William G. DeCoste (Gail) of Franklin NH, Robert G. DeCoste (Judy) of Maryland, David M. DeCoste (Pam) of Northfield, NH, and Richard H. DeCoste (Karen) of Marshfield. Dear grandmother of nine and great grandmother of five. Mary is predeceased by her sister Katherine, but leaves behind her brother-in-law and sister-in-law Gerard of Braintree and Elizabeth of Chelmsford.

Mary was born in Dorchester, performed with the Herzog Acrobatic Troupe as a Trapeze Artist, and retired as a Real Estate Broker. Mary was known for her infectious smile and laugh. Her greatest joy in life was being around her family.

Visiting hours will be held on Thursday, July 21, 2016 from 10:00 a.m. to 11:00 a.m. at the MacDonald Funeral Home, 1755 Ocean Street (Rte. 139) in Marshfield and will conclude with a Funeral Service at the funeral home at 11:00 a.m. Interment will be in Winslow Cemetery.

In lieu of flowers, donations in Mary's memory can be made to the American Heart Association, P.O. Box 417005, Boston MA 02241-7005.

For online guestbook, driving directions and other helpful links, please visit our website macdonaldfuneralhome.com.