Manfred Wimmer
(1944-1995) Austrian player who became the first Western professional in 1978, at the Kansai Ki-in. He reached 2 dan in 1978. Left Japan, brought Go to Kenya and Madagascar.
Invented the rarely used so-called "Wimmer Joseki":
Cited from Pok's site:
"Good shape" at a (after White above) results in a possible capture of the central black cutting stones after:
-Bb-Wc(!)-Bd-We-
-Wf.
Therefore etc. here.
After fighting goes on unpredictably, but having studied the situation is of course an advantage.
For more information on Manfred Wimmer see my article at Pok's Go Space (now also available in English)
Pok (alias B. Scheid)