Doctor Ruppel

The poor Doctor Ruppel Clematis has been getting battered in the strong wind.

Large pink flowers with deep red-pink stripe. Filaments white with cream-beige anthers. Occasional early flowers may be semi-double. Introduced into the U.K. by Jim Fisk in 1975 from plant(s) sent to him from Argentina by Dr Ruppel himself.

It appears to be a relatively new introduction but I haven't been able to find out who the Doctor was.