Ryujin
Legend
Her contemporaries would disagree with you. As would, I guess, anyone who considers her a saint today.
Of some interest might be Joan of Arc - Wikipedia, the free encyclopedia, which gives a crude overview of Joan of Arc's visions.
Possible interesting reading here: Lancelot - Wikipedia, the free encyclopedia
If you cannot wrap your head around the idea that "A knight who is false cannot best a knight who is true" or the way that the pre-modern mind conflates spiritual and physical properties, I fear that Lancelot will always seem merely a strong and talented man.
RC
Given the Beatification of Joan of Arc, I would have to agree. I had forgotten that there were also miracles attributed to Lancelot, so I'll have to withdraw my comment regarding him also.