Four George Vancouver X John Davis 1999 seedlings that flowered while still in the sunroom. John Davis has proved to be a very good pollen parent for me. Its parentage is not very complicated. I expect that its main contribution is to add hardiness and disease resistance.
The George Vancouver diagram is from "GeorgeVancouver Rose" by Ian S. Ogilvie and Neville P. Arnold, HortScience, volume 30, page146, (1995). The John Davis diagram is from "John Davis and J. P. Connell Roses" by Felicitas Svejda, HortScience, volume 23, pages 783-784, (1988).