He was a sickly child that was not expected to survive; burial clothing was ordered for him. He survived and, eventually, moved to Ohio. He became a lawyer, and was involved in both the Free Soil Party and the Republican Party. After John Brown's raid on Harpers Ferry, Edgerton was invited, by Brown's family, to settle Brown's affairs. He never was able to meet with Brown. He had a successful career as a politician, and after his term ended in the Territory of Montana, Edgerton returned to Ohio. He served as a lawyer in his home state until his death in 1900.