Fairfax Harrison notes [Early American Turf Stock, v1, p112] that the available evidence, which states that Jenny Dismal was a daughter of mare by [Godolphin] Whitefoot, and that John Baylor said she was a sister in blood to Paget's Brown Dormouse, suggests she belongs to Family 6-a (Cream Cheeks), although this cannot be proved

Jenny Dismal was possibly bred by John Thynne Howe, 2nd Baron Chedworth and may have run (unnamed) for a £50 prize at Chipping Norton as a 4yo in August 1756. Later in 1756 she was imported by John Baylor, Newmarket Plantation, Caroline County, Virginia

Family A19 died out in the 1870s

Dam of top class racehorse [Fitzhugh's] Regulus, winner of top races 1770 to 1773, including Jockey Club Purses; of [Hoomes)] Pegasus, sire of the Foundation Mare of American Family A17, which family has produced a number of high class horses; and 6th dam of outstanding American racehorse and sire Sir Charles (Leading Sire 1830, 1831, 1832, 1833, 1836)