When was Owen Glendower - novel created?

There seems to be a misunderstanding. There is no widely known novel called "Owen Glendower."

Owen Glendower was a real historical figure, a Welsh prince who led a rebellion against English rule in the 15th century. He is often mentioned in literature, but not as the central figure in any major novel.

Could you please clarify your question? Perhaps you are thinking of a different novel or a specific author who wrote about Owen Glendower?