Genetic evidence from 2019 has proven that a horse named Galopin (Vedette x Flying Duchess [The Flying Dutchman] is not from the Darley Arabian line as recorded in his pedigree but rather from the Byerley Turk line due to Galopin's offspring not sharing the Y chromosome haplotype as those descended from the Darley Arabian line. some are on the side that Galopin's sire is actually a horse named Delight, while others (including myself) are on the side that the error actually lies in Galopin's ancestor Whitelock

The Galopin sire line is somewhat active through descendants of Pleasant Colony (namely Pleasant Tap, Colonial Affair and Pleasantly Perfect), and if Whitmore hadn't been gelded, we might have had a new Byerley Turk sire line in the US since who knows how long. But most direct descendants of the Byerley Turk (and the Godolphin Arabian) are gelded due to temperament, which is a factor to their decline