Mina Miller Edison's family was quite different from that of her husband. Her great-grandfather had served for the Continental Army at Valley Forge. Her mother supported the Women's Christian Temperance Union. Her parents were devout Methodists.
Lewis Miller was born in Stark County, Ohio in 1829 and educated at Plainfield Seminary, Illinois. He married Mary Valinda Alexander in 1852. He earned 92 patents on agricultural equipment, his most famous invention being the Buckeye Mower and Reaper. Unlike his future son-in-law, Miller believed passionately in formal education and served as president of the board of education in his adopted hometown of Akron, Ohio.