To Jayne, The Dallas Surname information is so vast. In the War Memorial in Scotland, there are literally thousands of Robert Dallas'. You would need to try and find a time period and perhaps look up not just the Dallas side but the spouses side.Microfilm is available to view in Family History Centers around the World.It is difficult to read through the script handwriting. You look for birth records and note the witnesses. It is like putting a puzzle together. The problem that I am coming across is that in the 1700's, the records are not that complete or accurate. You must take into account what was going on in the area(wars and so on). Spelling of names changes too. Good luck.