I now have Victoria Chancellor/Atcheler/Bury's and Willington Shelton's marriage certificate. If you don't already have it let me know and I'll email it to you. It confirms 2 things:
1. It's definately my Victoria. Her father is given as John Chancellor and one of the witnesses is Sydney John Bury her son. He was previously Sydney John Atcheler. (From her first marriage). 2. She was passing herself as 40 rather than 47 - quite a difference!