American Stud Book entries for this tail female line consistently end in "imported Spanish Mare". Of known 18th century imported Spanish mares, only The Mule is possible by dates as the taproot mare of this family. Her only appearance in the ASB is as 4th dam of Telemachus.

Fairfax Harrison [E1:237] utilises an 1810 stud bill to estimate her importation date as 1770c, and references George B Whiting's comments (ATR 2:255, re his horse Lonsdale) in identifying her owner, Colonel Robert Alexander, as one of the Alexanders of southside (Mecklenburg) Virginia

Harrison also notes there is no evidence whether The Mule was from Spain or the West Indies, but concludes from details in the stud bill that she was "...of pure Andalusian blood and not, like so many Southside mares of her time, a 'chickasaw'."