His first name may honor William Fleming, one of the area's leading citizens and who briefly served as Governor of Virginia during the American Revolutionary War.
He then returned to Virginia and settled in his native Botetourt County, where he practiced law and farmed[3] until January 1, 1874, when he moved to his son-in-law's house in Staunton.
[4] Elected to represent the county in the Virginia Constitutional Convention of 1829–1830, Miller appears in George Catlin's large group portrait of the event.
[8] In 1853, Miller became U. S. Attorney for the Western District of Virginia, and held the office until the American Civil War began.
[10] Upon the organization of the Confederate Judiciary, Miller was appointed to his earlier position as Attorney for the Western District of Virginia under that Government.