Judging from pictures, this looks like a mossed version of David Austin's 'Christopher Marlowe' regarding the blooms, but I'm confident it would be better and healthier than the Brit.
Just to let anyone in the South know, I grow this rose in St. Petersburg Fl ! Does AWESOME own root or on Fortuniana. Very little blackspot if any. One of my favorite mosses I CAN grow well here !
Great little rose that grows very well in Savannah Ga area also. Slow to build a bush from an own root band. Compact/ mounding...18in Tx 2 ft. W after 3 years. Blackspots about 25% here and benefits from spray. Heavy, old fashioned organic feedings made a big difference in growth. 4-5 weeks between flushes. I find I need to deadhead. Very prickly....place it where it can't snag anyone.