Daniel J. O’Leary, 69, of Yarmouthport, died Monday, June 20, 2016 at the McCarthy Care Center in Sandwich after a long illness. He was the husband of Marilyn (Halentic) for 35 years. Born in Medford, Daniel graduated from Chelmsford High School. He served in the US Airforce during Vietnam. He worked for the Department of Corrections at MCI Concord for many years, retiring as a lieutenant. Following retirement, he worked for the methadone clinic in Yarmouth for 12 years. He enjoyed playing golf and his dog, who was his buddy throughout his illness. In addition to his wife, Daniel is survived by his sons, Daniel and David O’Leary; brother, Robert O’Leary; and five grandchildren. Services are private. Donations in his memory may be made to McCarthy Care Center, 73 Service Road, East Sandwich, MA 02537

It is sad to hear of Dan's passing. I worked with him at MCI Concord for many years and have good memories of him. He was such a good man. You have my deepest sympathies for your loss. Sincerely, John Durrance

Marilyn and Family, So sorry for your loss. I remember all the fun that Danny and I had. John Bovill

Marilyn we were very sorry to hear about your loss of Danny.