HMS Defender was the French privateer lugger Bon Marcel (Beau Marseilles in British records), that Royalist captured in 1809.

Defender served without distinction in Home Waters for slightly more than three years before being sold in 1814.

Commander John Maxwell, captain of Royalist, described her as "a very beautiful vessel" and "one of the fastest sailers out of Boulogne.

"[3][a][b] The Royal Navy took Bon Marcel into service as Defender.

[5] Defender shared the prize money for Hoop with Decoy.