Did Christina of Denmark REALLY Say "If I Had Two Heads..."?

Did Christina of Denmark really tell Henry VIII, "If I had two heads, one would be at His Majesty's disposal"? It's one of the most famous quotations associated with Henry VIII's search for a fourth wife. Christina, the young widowed Duchess of Milan, was considered as a possible bride for the Tudor king in 1538, and the story goes that she responded to Henry's interest with this wonderfully…