Duke of —, Allied commander-in-chief in the War of the Spanish Succession (11)

I believe the answer is:

marlborough

(Other definitions for marlborough that I've seen before include "Blenheim victor" , "Blenheim duke; town" , "- St, orange property (Monopoly)" , "22 [WILTS] College" , "public school" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.