Constantine, Demetrius "D" Age 44, July 18, 2021. Loving husband of Katie of 13 years. Dear father of Nikolas and Liam. Son of Deah (James) Gallagher and the late Charles Constantine. Son-in-law of Julie and the late James Fornell. Demetrius was a Financial Consultant as well as a Professor at Davenport University. He cherished his wife, children, family and friends, loved his dogs, enjoyed a round of golf and really was fond of visiting Disney World. Memorial contributions may be directed to Michigan Humane Society. Expressions of sympathy to www.obriensullivanfuneralhome.com