In the family book of Marpingen I found a slightly different information. See http://www.detzler.de/books/marp01.htmhttp://www.detzler.de/books/marp01.htm You will find there a picture of Peter and Nikolaus sister Margaretha. I found their father and grandfather. But I don't know what is meant with Holland. Are the Netherlands meant or is it a village, that I don't know. In the Netherlands I have not found any Detzler or Ditzler.