Sibylle was a 38-gun Hébé-class frigate of the French Navy. She was launched in 1791 at the dockyards in Toulon and placed in service in 1792. After the 50-gun fourth rate HMS Romney captured her in 1794, the British took her into service as HMS Sybille. She served in the Royal Navy until disposed of in 1833. While in British service, Sybille participated in three notable single-ship actions, in each case capturing a French vessel. On anti-slavery duties off West Africa from July 1827 to June 1830, Sybille captured many slavers and freed some 3,500 slaves. She was finally sold in 1833 in Portsmouth.

HMS Romney was a 50-gun fourth rate of the Royal Navy. She served during the American War of Independence, and the French Revolutionary and Napoleonic Wars in a career that spanned forty years. Five ships of the Royal Navy have been named HMS Romney. The origins of the name are from the town of New Romney, although it may be that the name entered the Royal Navy in honour of Henry Sydney, 1st Earl of Romney.