John Robert Costello, 21, of Florence, SC, passed away May, 2 ,2024. He was born in Florence, SC, a son of Rev. Chad Costello and Darlene Howard Costello. John graduated from South Florence High School and was a member of Eastside Christian church but had been attending Floyd Chapel Pentecostal Holiness Church. He was a refrigeration tech for Mars Bluff Specialty Services. He is preceded in death by his maternal grandparents Tommy and Phyllis Howard. In addition to his parents, he is survived by brother Caleb Christian (Olivia) Costello; sister, Anna Catherine Costello; paternal grandparents, Glenn and Lorraine Costello; niece, IraLynn Costello. Family will receive friends Sunday, May 5, 2024, from 3:00-4:00 PM at Floyd Chapel Pentecostal Holiness Church. Funeral Service will be held at 4:00 PM at the church. Burial will follow at Brewington Cemetery. Memorials may be made to Floyd Chapel Pentecostal Holiness Church at 1701 New Zion Road, Lake City, SC, 29560 or Eastside Christian Church 3541 E Palmetto St, Florence, SC, United States, South Carolina.