William's title "the Bad" seems little merited and expresses the bias of the historian Hugo Falcandus and the baronial class against the king and the official class by whom he was guided.
Julukan Gugghiermu "yang Buruk" tampaknya sedikit layak dan mengungkapkan bias sejarawan Hugo Falcandus dan kelas baron melawan raja dan kelas resmi yang dengannya ia dipandu.