"[4] As for his earlier history, the most popular theory is that the horse was captured at the Battle of Buda (1686) along with the Lister Turk, who was brought to England by the Duke of Berwick.

According to early records, Captain Byerley was nearly captured while reconnoitering the enemy, "owing his safety to the superior speed of his horse".

[5] As a general rule, the spelling of a name registered with the Jockey Club is considered definitive, even if it is an obvious error.

[7] However, the original edition of the General Stud Book was compiled nearly a century after the fact (in 1791) and contains several errors that have been subsequently corrected.

[5] The Byerley Turk was a dark brown or black[1] horse of unknown breeding, but described in historic accounts as an Arabian.

[5] At the time, Turkish horses were described as descended from "those of Arabia or Persia", but stated that they were longer in the body and of a larger size.

Goldsborough Hall is now a private family home that offers accommodation, which includes the commemorative Byerley suite.

[10] He did not cover many well-bred mares,[11] but his most significant sons include: The Byerley Turk also sired several highly influential daughters, most of whose names do not survive.

Most of these branches have died out over the course of time in the purebred Thoroughbred, but remain present in other horse breeds in which mares were bred to male descendants of the Byerley Turk.

Of the English Thoroughbred stallions who stood at the stud at Trakehnen, some were Byerley Turk sire line descendants, including Snyders (b.

1927), a Byerley Turk male-line descendant through Atlantic (1871–1891) through his son, the French Thoroughbred stallion Le Sancy (b.

[68] Rubinstein I sired over 400 mares in different German warmblood registries, as well as numerous sons recognized as Oldenburg and Hanoverian stallions.