The seven victims include a man, his wife and five young children.
Federal Aviation Administration authorities say the pilot tried landing at an airport in Demopolis, but crashed about 2 miles away in a wooded area.
The Marengo County Coroner's Office says the family were returning from a family reunion in Missouri.
The Marengo County Coroner identified the dead as: Fred Teutenberg, 42; his wife, Terresa, who was in her mid-30s; their daughter Emma, 2; their son Peyton, 4; their daughter Ellie, 6; their son Brendon, 9; and their son Will, 10. They are from the Destin area.
The coroner said that relatives told him the Teutenbergs were flying back Saturday so they could make it to church the next day.
The plane was upside-down and one of its wings had broken off, apparently as it crashed into trees.
FAA records show that the plane was built in 1978. It's registered to Advanced Integrated Technology Solutions LLC in Niceville, Fla.
The plane was found at about 2:17 a.m. Sunday.
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