Thunderbolt (own brother to Smolensko), was a black colt, bred by Sir Charles Bunbury, Bart., in 1806, and was got by Sorcerer, out of Wowski (bred by Sir Ferdinando Poole, Bart., in 1797), by Mentor (son of Justice, by Herod), out of Maria (the dam of Waxy), by Herod, out of Lisette, by Old Snap, out of Miss Windsor, *) by the Godolphin Arabian, out of Sister to Volunteer, by Young Belgrade (son of the Belgrade Turk), out of a mare by Bartlett's Childers (own Brother to Flying Childers), &c.
Sir Charles Bunbury commenced the year 1813 in a most auspicious manner, winning large sums of money both at Newmarket and Epsom with Smolensko, for whom £5000 was offered and refused before he went to Epsom. Sir Charles was also offered £2000 for Thunderbolt before he broke down. He slipped up on leaving the stable, and severely injured his off fetlock joint. His stock were mostly good runners. He was upwards of sixteen hands high, possessing great bone and enormous power, with great speed; but was not entered for the Derby.
At Newmarket (First Spring), won the Newmarket Stakes of 475 gs., beating the Duke of Grafton's bl. c. Japan, by Trumpator, Lord Grosvenor's b. c. Puck, by Alexander, and two others, all three years old. S. mg., 8st 5lbs, received 50 gs. forfeit from General Leveson Gower's b. f. Mirth, by Trumpator, 8st, both three years old. Also, 8st 2lbs each, received 50 gs. forfeit from General Grosvenor's br. c. Trump, by Trumpator, both three years old. At Newmarket (Second Spring), for three years old, colts 8st 4lbs, fillies 8st, won 50 sovs., beating Mr. E. D. Radcliffe's b. c. Volucris, by Gohanna, Mr. Kellermann's b. c. Cockatoo, by Popinjay (son of Buzzard), Lord Stawell's b. c. Edmund, by Orville, Mr. R. Clark's Minikin, by Whiskey, Mr. H. Vansittart's b. f. Brillianté, by Whiskey, Sir Charles Turner's black colt Merry Andrew, by Stamford, and three others. Having met with a serious accident soon afterwards, he was taken out of training.
*) Miss Windsor (bred by the Duke of Cumberland), ran in the name of Sylvia during her racing career.
[Taunton, Thomas Henry: “Portraits Of Celebrated Racehorses Of The Past And Present Centuries”, 1887]