The family started with Lack Count of the Székelys of the Herman (Hermány) clan which are thought to have sprang from the Raabs family from Raabs an der Thaya in Lower Austria later Lords of Nuremberg. The theory says they arrived in 995 together with Giselle of Bavaria and settled in the southern area of the Pannonian Basin. His descendants took the name of Lacković/Lackfi which means son of Lack (Laczk). After having lost most of their influence following the Bloody Sabor of Križevci the remaining branch of the Lacković (Laczkovich) family settled on their Croatian estates in Križevci County, integrating, over the centuries, into the Croatian nobility.