Lady Suffolk, the "Old Gray Mare" of Long Island, was foaled in 1833 at Smithtown on the farm of Carl S. Burr, Jr. Her sire was Engineer II, her dam Jenny. David Bryan bought the filly, who was pulling an oyster cart, when she was four years old and started her racing the following year at Babylon, Long Island, for a purse of $11. Lady Suffolk raced under saddle and won two out of three heats. She went the first ever 2:30 mile at Hoboken, New Jersey in 1845, doing the mile in 2:29 1/2. She held records under saddle, to wagon and high-wheel sulky. A campaigner for sixteen seasons, Lady Suffolk was considered the "Queen of the Turf" until her death in 1855 in Bridgeport, Vermont.
Published in the Harness Racing Museum's 1994 book, The Immortals