Regina Adelheid Z has competed in show jumping at 1.40 m courses. Her mother and great-grandmother both competed on national level. A full sister of Regina also competed on national level. The KWPN approved stallion Regino (son of Regina) competes at 1.60 m courses. His full brother (Almé Adelheid Z), also a son of Regina, competes in show jumping on national level.

At the age of seven, he already took part in the World Championship for young horses in Lanaken. One year later, he won his first big price at two-star level with equestrian Mans Buurman. Regina Adelheid Z and several of her descendants are still with us at Stoeterij van Kleef.