From the Van Straaten performance lineage

Under Frederic Vernaet, sire Orak d’Hamwyck T&L is impressing at 1.55m-level and has already placed in several Grand Prix classes. He has evident potential for the very highest level, and as a sire Orak also seems to be in a class of his own. This damline likewise proves its value. Dam Niebelle-S is a half-sister to the international 1.50m horse Isabelle II-S ridden by Olivier Robert, and in both the second and third generations we find mares that have proven themselves at 1.35m-level. The line then traces back to the 1.40m mare Siebelle S. She herself produced the 1.50m horse Wilhelmus S and is a half-sister to the 1.45/1.50m-level mares Veubelle S and Zeuchelle S. The top showjumpers Dittorio-S and Fellini-S also come from this direct line.