Hi Norrie, Sorry for the delay, however I have managed to confirm that the following are related so any further information would be much appreciated
EW 2552 Alexander Corns & Agnes Barclay - my grandfathers brother & sister in law
EW 1551 Edward Gillan & Margaret Corns - grandfathers sister & brother in law
EW 670 John Beveridge & Mary Cons - grandfathers sister & brother in law
Thanks again for any further information you may be able to provide.