This ancient rose has a few other names, e.g., 'Great Double White', "The Jacobite Rose', 'Cheshire Rose'
and dates from pre-1500.
The shape of this rose can be found in some early architecture (rose windows & adornments), not quite so obvious in this example.
My rose is on its way out, I'm just keeping it going because
I'm not sure I can get a replacement. The understock that my clone is grafted onto is taking over.