Mepụta ụdị okwu a dị mgbagwoju anya Nwa ya nwoke bụ Louis van Opstal ghọkwara onye na-akpụ ihe.
N'ezie, ụdị ahịrịokwu dị mgbagwoju anya bụ "Nwa ya nwoke bụ Louis van Opstal ghọkwara onye na-akpụ ihe, ọ bụkwa onye nkuzi nke Anton Clemens Lünenschloss, onye na-akpụ ihe n'ụlọ ikpe nke Wurzburg. "