Nicholas IV of Werre is not a widely recognized historical figure in established scholarly literature or reputable encyclopedic sources. The medieval lordship of Werle—located in the region of present‑day Mecklenburg, Germany—was ruled by several members of the House of Werle, some of whom bore the name Nicholas (Nikolaus). However, extant records commonly reference Nicholas I, Nicholas II, and occasionally a Nicholas III, but there is no verifiable evidence of a distinct individual identified as Nicholas IV of Werle.
Given the lack of reliable documentation, any attribution of a “Nicholas IV” to the Werle lineage remains speculative. Consequently, no definitive biographical details, reign dates, or political activities can be provided. The name may arise from later genealogical conjecture, misinterpretation of medieval sources, or conflation with similarly named nobles from neighboring territories. Further primary source research would be required to confirm the existence of such a figure.