After Ave Slinx from Brûges (1295), as far as we now know it is quiet for many centuries. First in 1504 the name Slings arises from the archives in the present Belgium (the research is still going on); About 1600 Slingses are appearing in the so-called Nassau-Brabant, to be more precise in the christening-, marrying and burial-books of Hooge & Lage Zwaluwe.
Nassau-Brabant is in the 80-years lasting war between the Netherlands and Spain the only piece of Brabant in Protestant hands. Our hypothesis - it's not much more than that yet - is that Peter Slings (born about 1550) has joined the Reformation and due to the Catholic persecution (after the fall of Antwerp in 1585?) from the Southern Netherlands has fled to the nearest piece of Protestant land: Nassau-Brabant.