Bred in Yorkshire by Leonard Hartley of Middleton Tyas, near Richmond, he was influential in the stud. Mr Prior estimates his year of birth at about 1712
Half sister to Hartley's Blind Horse is: SOREHEELS MARE (f SOREHEELS). This Soreheels Mare is the dam of: YOUNG CARTOUCH MARE (f 1748 Y.CARTOUCH){See: Stella by Plunder}; SOUTH (b c 1750 REGULUS); REGULUS MARE (f 1751 REUGLUS); and, MATCHLESS (b c 1754 GODOLPHIN ARABIAN).