Sonya Isabelle Marcellino Costin, 91, of Delray Beach, FL, and Lake Burton, GA, passed away on March 19, 2026. She is preceded in death by her husband, Robert P. Costin, her parents, Peter R. and Christine M. Marcellino, and her brothers, Patrick F. and Peter R. Marcellino. Sonya is survived by her nieces, Gianna Marcellino, Cari Marcellino, Christy Marcellino, and nephew, Patrick Marcellino, Jr. (Jennifer), as well as many loyal friends. 

Sonya graduated from Seacrest High School in Delray Beach in 1952 and married her high school sweetheart, Bob. Together, they founded Costin’s Flowers & Gifts, a thriving business that served Palm Beach County successfully for over 45 years.

Sonya was strong and resilient. She worked hard to make sure customer service and satisfaction were the top priorities at Costin’s. Her passion was creating glorious floral arrangements as well as picking exquisite china, crystal, silver, and accessories to offer her customers.

Though Sonya and Bob’s primary residence was Delray Beach, their true passion was time spent at “Costin’s Chalet” on Lake Burton. In addition to “Lake Time”, they loved to travel the U.S. in their Bluebird Wanderlodge. Whenever you saw RC-2 roll by, you knew Sonya and Bob were on their way!

Sonya will be deeply missed by all who had the privilege of knowing her and caring for her. Forever loved and never forgotten.

The funeral service and burial will be held at St. Mary’s Cemetery in Amsterdam, NY, at a later date.

Memorial contributions may be made to Achievement Centers for Children & Families, 555 Northwest 4th Street, Delray Beach, FL 33444, 561-266-0003 www.AchievementCentersFL.org

Beck Funeral Home, in Clayton, Georgia, is in charge of the arrangements and is honored to serve the family of Sonya Isabelle Marcellino Costin. If there are any questions, please call 706-782-9599. An online Memorial Register Book is available at www.beckfuneralhome.com.