This particular stud was brought to Hungary in 1816 and he was of a Norfolk Roadster stallion and a mixed bred mare. Senior was bred for 26 years at the Mezohegyes Stud to a variety of Spanish-Neapolitan mares. Later English Thoroughbred blood was added for further refinement.
Aside from the bloodlines developed at the Mezohegyes Stud a heavy local variety developed as well in a Municipal Stud Farm in the town of Debrecen which is called the Hortobagyi Nonius. In 1961 these two strains were united under one studbook.