I know that Ray Spooner hybridized a yb min named Hillary which was in the buyer's guide in between the last two published editions of Modern Roses. I think it was in the 1995 or 1997 guide but never made it into the latest M R from ARS. I still have one and it is a very attractive mini/probably should now be a mini flora but since the registration was lost, it is har to exhibit it.

Simply Elegant is a sister seedling to Mary Louise. It is registered. Mary Louise is now classed as MF.