Principal performances, Newmarket unless stated:- 3 Jun 1817 - King's Plate [hunters] Ascot; 6 Jun 1817 - £50 Ascot (from The Duke and Miniature); 8 Jul 1817 - 100gns stakes (5/2); 28 Oct 1818 - 50gns Handicap (6/1, easily, from Stainborough 13/8 rec 7lbs and Lepus 5/2 rec 20lbs); 12 May 1819 - 25gns match (1/2) v Canvas (rec 15lbs); 13 May 1819 - 100gns match v Captain Candid; 4 Aug 1819 - £70 Huntingdon (from Gammon); 4 May 1820 - 100gns match (4/6) v Barmecide; 4 May 1820 (same day) - 10gns each Handicap (from Phoenix rec 13lbs)

31 Oct 1817 - beaten 100gns match (8/13) v Duenna (rec 10lbs);

13 May 1818 - 2nd 100gns each stakes (8/1, to The Giant 7/4 rec 10lbs); 14 Jul 1818 - 2nd £50 Prize (13/8, to Pendulum 5/2); 30 Oct 1818 - 2nd 80gns Handicap (3/1, by half a neck to Advance rec 12lbs); 16 Oct 1820 - 2nd Garden Stakes (5/2, to Antar 2/1)

Initially named and ran as Cygnet until renamed Glow-Worm by Mr. Sheward in 1817

He made very little impact as a stallion