How old was Thomas Edison when the seven people died in his family?

Thomas Edison was born February 11, 1847 in Milan, Ohio. He was the seventh and last child of Samuel Edison, Jr. and Nancy Elliot Edison. His parents had no special mechanical background. His mother was a former schoolteacher; his father was a jack-of-all-trades - from running a grocery store to real-estate. When Thomas was seven years old, his family moved to Port Huron, Michigan. He was a very curious child who asked a lot of questions.