I have been researching the parents of Edward MOYLE/MILES, convicted of theft at Launceston Assizes in 1785 and have found six Edwards born at the appropriate time.
After eliminating four of them I believe I have identified the parents of Edward the convict: Richard MOYLE and Charity PRISK, married at Helston, Cornwall on 2 January 1758. Edward was the second of their seven children, born in 1760.
Richard was himself convicted of theft at the Launceston Assizes in 1775, when Edward would have been 14 years of age. There was a long list of victims of Richard's crimes (theft) and his oldest son, Richard, gave evidence against him at his trial.
What makes me believe this Edward is the First Fleet convict in 1788 (apart from his bearing the right name and being the right age)is the naming of his children. Edward's first daughter was named Susannah, after her mother, Susannah SMITH. His second was Martha. Edward's mother, Charity PRISK, named her own daughter, Edward's little sister, Martha, after her mother, Martha, and her own sister, also Martha.
There are some misleading entries posted to IGI by members (without sources) and various records give conflicting information about Edward's birth year. In addition, there remains one other Edward of about the right age to check out but I find the coincidence of names reasonably convincing and think I have at last found the parents of Edwatrd MOYLE, convict and pioneer.