With old roses, arriving something definitive takes more time than usually expected. Not everyone agrees that Marchesa Boccella is actually the same rose as Jacques Cartier. Old roses come from differing provenances. In those cases, same-named roses may or will perform differently. Even registered cultivars like DAustins perform differently depending on location.Contradicting and confusing literature is one of the most frequent findings when studying and reading about roses. So, what to do?. Well imho is just to try both. With your ammount of available room in the vast space views of your farm, you'll surely find room for both and discover their intrinsic beauty.
While I was purchasing roses for my rose garden,I've been faced with many of these type contradictions. I arrived to a rather simplistic solution: TIO ( try it out). Just like you I don't have space restrictions. The only restrictions are availability ( specially here but sometimes up there too) and budgetary. The latter are handled on a multi year budget scheme.
Would I try to get Jacques Cartier Climbing? it's a sport of the bushy Jacques Cartier. It is a found rose 2008 in Belgium. So I would get it without doubt. If it grows like mustbnuts experienced .... then it would be placed next to an arbor/pergola or along a fence railing instead of a rose bed. I have to see whether its available here. Both names are found in growers lists here. I only have MB growing in my yard. Its bushy and well behaved.
In HMF I read comments about this same issue with growers in Europe contending that they are different. In that site a comment mentions saying that there were registered 4 differing JC and one MB in J Gravereux' Roseraie de l'Haÿ ! . There's a thread about these two (2013) for those intrigued:
How far does it matter?. imo not too much... ..Grow it/them and enjoy it/them. Perhaps it's in your path to distinguish them ...then for you...
Mustbnuts said:So Burling grows the "climbing Jacques"? I may have gotten that one instead of the MB that I ordered. MB was anything but orderly and small. I would get both. Especially since you have the space. Go for it!!!!
Beautiful.... does she have a strong fragrance?