Hello Rosie and Sandra
Having downloaded the marriage certificate from Scotlandspeople, I can now confirm that Helen (Ellen) Bett Barclay married George MacKay at 22 Kirkgate, West Calder, on 21 June 1912. One of the Witnesses to the marriage was Mary Ann Barclay, Helen's sister. He was the son of James MacKay, fisherman, and wife Jessie MacKay, maiden surname, also Mackay.
Note: witness Mary Ann Barclay is I believe Mrs. Annie Scott but as of yet I have NOT found the marriage.
Regards, Roy