Daniel J. Mackell, Sr., 85, a retired career Foreign Service Officer, died peacefully on August 22, 2012 at Collingswood Nursing and Rehabilitation Center in Rockville, Maryland. Mr. Mackell was born on January 9, 1927 in Yeadon, PA. He served his country in the US Army during WWII, stationed on Okinawa. Upon his return, he attended VPI on the GI Bill, and graduated from Villanova University with a degree in Chemical Engineering. Mr. Mackell’s lengthy and varied career began as a consultant for Pennsalt, followed by management positions with Metropolitan Life Insurance, Klein and Saks Management Consultants, and Esso. In 1969, Mr. Mackell joined the Foreign Service as an Economic and Development Loan Officer for USAID, and traveled with his family to posts in Brazil, the Dominican Republic, Egypt, and Jamaica. Additionally, Mr. Mackell traveled extensively throughout the Middle East, Latin America, Europe and Asia. Mr. Mackell was predeceased by his wife Joan C. Mackell, in 2000. He was a loving, attentive and devoted father, Pop-Pop and great-grandfather to his large family. Survivors include seven children, Marianne T. O’Brien (Jack) of Monroe, NC, Kathleen A. Horner (Michael) of Leesburg, VA, Thomas P. Mackell (Margaret) of Richmond, VA, Daniel J. Mackell, Jr. of Greenwich, CT, Joan C. Alden (Ed) of Roswell, GA, Christine X. Rocha (Charles) of Landenberg, PA, and Paul R. Mackell (Lucia) of Chevy Chase, MD; 20 grandchildren, and 10 great-grandchildren. Mass will be at 11 a.m. on Friday, September 7, 2012 at The Shrine of the Most Blessed Sacrament in Washington, DC. Interment will be private. In lieu of flowers, the family suggests a donation to a charity of your choice .