This is the rose in question: https://davesgarden.com/guides/pf/go/72884/#b
After Ophelia died I emailed a couple of specialty nurseries to find it. Seems there are a few nurseries around the country that have cuttings & rootstock available from old 19th-century gardens, & they'll propagate vintage plants every year depending on demand.
I managed to find an Ophelia rose. Planted it in my parents' rose bed, as I wasn't living with a garden at the time. My parents took care of all their roses & ignored mine. It put out a single bloom, then died.