Click left "Geschichte" scroll down until "Alte Schule Flammersfeld" and read about your ancestors:
"Von 1714 bis 1734 war Johann Conrad Iskenius, Sohn des Flammersfelder Pfarrers Iskenius als Schulmeister tätig." Source should be a local book named "900 Jahre Flammersfeld". If you like, I can try to find out if this book would be interessting for you and if it is availble. Otherwise, if there is someone who has researched the villagestory in archives and may be know more where to find informations about your family.