given some suggestions on your blog Sheila.
Tsukiko is the closest match. does it ring a bell?

Miss Bateman?

Thanks both, but I’m afraid neither ring a bell.

Am so envious of your beautiful clematis, have tried several times to grow them in my garden but to no avail.

Seaburn girl (Eileen) you’re a champion gardener! I’ve just been out to my greenhouse at dusk to see if I could find the label - and - you’re right, it is C. Tsukiko. Thanks so much … I obviously didn’t read the label carefully enough, but I’m delighted to now be sure of its name.

just so pleased you have a name for it.