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          Osbourn Dorsey, at 16, is credited with inventing the doorknob and doorstop in 1878.

          He was born in 1836 in Virginia. Captured in the Washington DC slave emancipation records from April 1862, Dorsey is listed as “Osbourn Dorsey- son of Christina- Aged about eight months- ordinary size- dark complexion.”

          According to Face2Face Africa, he was born a slave but freed when he was around eight months old, according to history.

          His sister, Mary was six years older than him and was also described as ordinary sized while Levi was four years old and described as huge in stature.

          Dorsey was a self-taught inventor.

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          He began his career as a blacksmith, but he soon turned his attention to inventing.

          Details from the 1880 census indicate that when Osbourn Dorsey was 18 years old, he worked as a butcher and resided with his parents, siblings and brother-in-law, Isaac Williams.

          Before Dorsey invented the door knob, people relied on some ty