William O. Castiglioni, Jr.

Kennesaw - Mr. William O. Castiglioni, age 69, of Kennesaw, passed away December 16, 2025. He was born May 31, 1956 in Johnston, Rhode Island where he graduated Johnston Senior High School in 1974 and went on to graduate with a Bachelor of Science from Roger Williams University in 1978. He spent a majority of his career in the nuclear and structural engineering space, most recently having worked for Georgia Pacific and BlueLinx in Marietta. Mr. Castiglioni was a joyous man full of happiness and fun. He was often making jokes, cooking great meals and making the most of family time. And His loved ones referred to him as "Uncle Billy", "Mankid" and "P-Love".

Survived by his wife of 22 years, Deborah Castiglioni; children, Holly Haugh, Eric Castiglioni and his wife, Lindsay Castiglioni; step-children, Jessica Gilmore and her husband, Brian Gilmore, Jordan Coker and his fiancé, Olivia Browning; brothers, Alfred Castiglioni and his fiancé Linda Lombardi, David Castiglioni and his wife Lori Castiglioni; sister, Claire Ferranti and her husband Anthony Ferranti; grandchildren, Dylan, Julia, Maggie, Allie, Jarrett, Blaire, Blaine, and many nieces and nephews.

Online condolences and words of remembrance may be made at www.mayeswarddobbins.com

Mayes Ward Dobbins, Historic Marietta Chapel, Funeral Home, 180 Church Street, Marietta, GA 30060. 770.428.1511.