Vintage roses has it but it would have to be custom rooted.

I got it out of Canada, I think it was Hortico. Theirs are all grafted, but I asked for own-root and what I received was a sucker off a main plant. It's doing great. You might try taking some cuttings. If you do a bunch, at least one should take.
Here's Cheryl Netter's website on rooting roses. She puts her cuttings straight in a baggie, but I use a clear plastic cup, so I can see the roots. then I put the cup inside a baggie.
Spring is the best time to take cuttings and it's important to keep them in the shade.
It seems to me for sentimental reasons, you should try to root a rose off your family rose.
Another place to read about rooting roses is the Harwood rose nursery. She used the pop bottle method.

Here is a link that might be useful: Cheryl Netter

Thanks so much for your responses. I did find Vintage Roses' website. What confused me was that they distinguish between three varieties of plants that could be all the same centifolia major rose or the rose des peintres.

Kaylah, the link you posted is great, I will try this out myself, Unfortunately it won't work for the rose in question, it grows in my parents garden in Germany, out of reach for me... :-) But, I will get the "same" plant from a nursery over here. Are there any restrictions for buying roses in Canada and "importing" them? Oh dear, that would mean I could check out even more nurseries across the border.. LOL

Thanks again for your help and answers.
Marc

Far as I know, Pickering and Hortico are set up to ship into the US. Some others aren't.
About ten years ago, collecting antique roses was different. Heirloom Roses was responsible for igniting interest. Today, people have moved on to collecting tea roses, noisettes, climbers, etc. Most of the posters here are from warm climates now.
Nurseries aren't selling as many of the once blooming antiques as they used to. It makes it difficult for somebody like me. I am gardening on rock so we have to pound out a hole with a pick axe. So I collect a few every year. And every year they get harder to find.
Canada has more, but they are grafted. I have five roses that are 15 years old now that are grafted, and they've quit blooming.
I learned eventually to plant the graft 4 inches deep so the rose suckers off its rootstock.
Here's a page of centifolias from Pickering.

Here is a link that might be useful: Centifolias

Hi Kaylah, thanks for the links. I went ahead and ordered from Hortico yesterday. It wasn't clear from their site whether the roses are grafted or on their own roots. Regardless, I was planning to do as you do and plant them a little deeper and let them develop their own roots. I am actually looking forward to some suckers, what better gifts to give to friends, right? :-)

May I ask where you garden "on rocks"? Sounds like you are dealing with a challenging site. Here on the north side of Indianapolis our biggest challenges to growing roses are probably cold winters and rose midge. The rose midge is actually partially responsible for me searching out the once blooming old roses, since their blooming period will be over before that pest becomes active. That and off course the fragrance and charm and history of old roses.

In any case, thanks again for providing me with the links to those two nurseries, I'm afraid I will need to carve out some more space for future purchases...

I garden in what was an old river ranch, now a subdivision. I figure the river had a curve in it and the rancher got out his tractor and straightened it out. Then they put in two ditches which come out of the river and curve back to the river in a semicircle.
It is a step up from my land to the field behind me. I have six inches of topsoil and then rock. Right next door that lot has all kinds of dirt. I could have bought that one, if I'd known.
Most of Montana is really short on dirt so it didn't occur to me, but right next door is all kinds of dirt.
Every spring I go down to the river and find the river chewing up that spot in the bank where the river once curved. It's taking back about 2 feet a year. It's a fourth of a mile over there so at that rate, I'll be under water in 500 years.
Guess I can handle that.