The General Stud Book lists this mare as being by an Arabian, and out of a mare by a Barb. This info was taken from Chaney`s Racing Calendar. Some have taken issue with Chaney`s accuracy. The fact that she was bred at Helmsley makes it more than likely that her female side at least was native mares.
* Old Bald Peg first appears in the General Stud Book in the entry for her daughter, the Old Morocco Mare. This is one of the oldest recorded families, since the Old Morocco Mare`s birth date is estimated to be c.1655, and Old Bald Peg`s five to ten years prior to that. Her breeder and local origins are unknown, although she was apparently of pure oriental breeding, being by an unknown Arabian (Wentworth says his name was Sultan), out of a Barb mare. Her name indicates that she had extensive white markings, possibly a blaze (i.e. bald-faced), but nothing else is known of her. Fortunately, more is known of her only recorded foal, the Old Morocco Mare. Of her, the GSB notes she was sometimes called Old Peg and was bred at Helmsley by Lord Fairfax, got by his Morocco Barb, out of Old Bald Peg, who was got by an Arabian, out of a Barb mare. GSB Vol.