Hubert Delamboye, born 1945 in Valkenburg (Netherlands). The recording I'm sending is a fragment, for which I'm sorry, but it's still definitely too long for this comic singing. Here are available: his biography, pictures, and one more recording. How frightening to imagine that he should have sung Tannhäuser - and even 12 years after the Holländer performance recorded here!
I would like to thank Robert Schlesinger for the recording and notes.