In 1754 he won the Jockey Club Plate on Newmarket's Round Course against Pytho and Brilliant and a 300-guinea match against Ginger.

[2] However it wasn't until his greatest son, Eclipse, showed talent on the track that Marske became extremely popular.

During his 22 years at the Earl's stud in Rycote, Oxfordshire, Marske sired across the next generation 154 winners.

[4] He died in July 1779 and was commemorated with the following poem:[4] Ye sportsmen, for a while refrain your mirth; Old Marsk is dead!

* Marske is inbred 4D × 4D to the stallion Hutton's Coneyskins, meaning that he appears twice fourth generation on the dam side of his pedigree.