The story
From a Dutch name of a farm, either Rozenveld (one in Zeeland) or Ruiseveld (one in Brabant), from Middle Dutch; the former could be a compound of rose (“wild rose / poppy?”) + velt (“open country; field”) or like the latter of rusch (“rush reed”) + velt, “open land growing with rushes”.
Etymology from Wiktionary, CC BY-SA 4.0.