Admiralty records show that in October 1813 Admiral Sir John Warren, commander-in-chief of the Royal Navy's North American station, purchased Syron and renamed her Pictou.

[3] One source states that on 19 September Pictou captured the brig Isabella, of 126 tons (bm), which was sailing to Boston with a cargo of silk, wine, oil, etc.

[5][6][a] The records of the Halifax Vice Admiralty court gives the date of capture as 19 July, and reports that Isabella P. Slaygur, master, had been sailing from Algeciras to Boston carrying wine, silk, oil and cork.

[6] The USS Constitution captured Pictou on 14 February 1814, windward of Barbados.Pictou was escorting the armed merchant Lovely Ann from Bermuda to Surinam.

In the morning Constitution, under the command of Captain Charles Stewart, stopped Pictou with a shot through her sails and captured her.