Sullivan, Daniel T., 45, of Springfield, passed away on April 4, 2016 in his residence. Daniel was born on September 25, 1970 in Springfield, the son of Thomas J. and Anne (McGee) Sullivan. He had been employed in the IT Department for Spectra Physics where he was able to demonstrate his passion and interest in computers and technology. In addition to his mother, survivors include his daughter, Amanda Sullivan of Columbus; one brother, Tim (Kimberly) Sullivan of Springfield; his nieces and nephews, Mandy (James) Snell, Tim, Jr. (Beth) Sullivan and Kelly Sullivan. He was preceded in death by his father and his beloved dog, Louie. A Mass of Christian Burial will be held at 11:00 a.m. on Thursday in St. Bernard Catholic Church. Visitation will be held one hour prior, starting at 10:00 a.m. at church. Arrangements by CONROY FUNERAL HOME.