Isambarde had an oboe, I think it was Emily played it.
But whats the problem? Surely "traditional" music can be played on any instrument to hand, there are no rules (except in some peoples minds). And the oboe is in C, so will have no difficulty joining in. (I remember a session where someone played clarinet, obviously having practised at home, and was totally oblivious to the fact that they were a semitone out!)