The Ancestors of Arthur van Angeren

I am searching my son's ancestors for some 10 years by now.
Particularly the names "Van Angeren" (or "Van Angelen"), "Luurs", "Stolwijk", "Küïn" (or Kuin), and "Velu" are for me of interest.
Typically the "Van Angeren" family lived around Arnhem, in The Netherlands, but quite some family is concentrated around Utrecht.
As far as the "Luurs" family is concerned, the source seems to be somewhere in Eastern Frysia (the Nothern part of The Netherlands and Germany).
The "Stolwijk" family did not have too much of my attention yet.
I traced back the "Kuïn" family to Indonesia, but couldn't come much further than the start of the 20th century, due to the lack of available sources.
The "Velu" family has its source in Belgium. I do have quite some information on this one.

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• Book: Ancestors of Arthur van Angeren

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• The ancestors of Arthur van Angeren (334 KB)
  This tree contains all the known ancestors of Arthur van Angeren