King's wife, in a novel, fences in an unorthodox way (4,2,6)

I believe the answer is:

anne of cleves

I'm a little stuck... Click here to teach me more about this clue!

(Other definitions for anne of cleves that I've seen before include "Mare" , "Fourth wife of Henry VIII" , "an ex of Henry's" , "Royal divorcee" , "King Hal's fourth wife" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app