There was a Bly family in Virginia in the 1720's. William Bly was living on Gravily Creek in Prince George County. A woman named Mary Bly had two illigitimate children about this time. Sarah Bly and Joshua Irby (father Joshua Irby). These are recorded in the Bristol Parish records. Mary witnessed the will of Joseph Gill and Joshua Irby was bound to Peter Gill, a son of Joseph Gill's.