In the past fifteen years I have seen at least half a dozen different plants labeled as “Louise Odier”. I don’t doubt there are dozens of generic pinks of this type in commerce, several of which are peddled as Louise. So, beware: the odds are that if you use it in breeding, there is a good chance you are working with one of any number of mystery roses.
And FYI: I have two clones labeled as Louise, and both of them Blackspot tragically. One of Austin’s middle period roses, ‘Mayor of Casterbridge’ was a favorite of mine…at least back in the day when I sprayed for disease. Once I stopped doing that, it dwindled down to a few paltry sticks within three years, and I suspect it has now died completely. Dreadful plant, resistance-wise. There ain’t a Bourbon I’d dare to use in breeding; every one I ever grew got disease like no tomorrow. I suppose if you have the right climate…