Nerk van de Grensstraat is a very important son from Flap and together with Pousca du Mouscronnais produced Quacha du Mouscronnais (1972 French Ring Champion). Quacha, through his daughters, is at the base of most breedings from the French kennels "de la Fontaine du Buis", "du Vulcain", "de la Noaillerie" and "du Domaine du Caméléon". Nerk also sired Teddy and Tzar de Ventadour (selected for three French finals in Ring 3).
