Cruckshank wedding photo

This photo has been in my family since it was taken in 1913, 1914 or 1915, and I now seem to be the lucky custodian. It does need some restoration, though, as it's looking a bit spotty in parts.

Does anyone recognise the people in it? I know the older woman on the far right is my paternal great-great-grandmother, Elizabeth Lorne CRUCKSHANK (nee BRACKENREG) - (also sometimes spelled Cruickshank). Her husband, John CRUCKSHANK, died in 1912 and Elizabeth is wearing mourning black, and John's not in the photo, so I presume it was taken since then.
Three of Elizabeth's four sons all married in 1914 or 1915, and a daughter in 1913.

So the contenders are these four of her eight children:

a) Ruby Clare CRUCKSHANK marrying Percy A JONES (1913 - West Maitland)
b) Sidney Herbert CRUICKSHANK marrying Maude Annie BENNETT (1914 - Hamilton)
c) Leslie George CRUCKSHANK marrying Louisa Elizabeth HALL (1915 - Narrabri)
d) Cyril Douglas CRUCKSHANK marrying Minnie Florence METCALF (1915 - Cessnock)

Does the placement of the mother-in-law mean anything? If she's standing next to a man does that indicate that he's her son? Or maybe just the best man, possibly unrelated? Her flower is the same as the buttonhole on the man she stands beside, but I don't think he's the groom. I think the groom would be the other seated man with roses in his buttonhole which seem to better match the bride's bouquet. Also, he's sitting in a much fancier chair - surely the groom would get a flashier chair than the best man! I presume the bride always stands in wedding photos so as to show off her dress at it's best.

Any/all ideas welcome :)

Update: well the verdict is in, and it is actually option (e)!!, Ida Ellen MAHER (nee CRUCKSHANK) marrying Wilmott Herbert BAILEY in 1915. My uncle, Kevin COLLINS, recognised Mott BAILEY as he always wore a moustache, which was rare for those times. Mystery solved. (Sigh of delight and relief.)