I think the village from where your ancestors came from is called 'Wilrijk'. This place is in the south of Antwerp.
I saw the name that you're looking for: VanGenechten. According to the marketing website www.sopres.be
this name appears 970 times in Belgium. Compared to the family name 'Peeters' (which appears over 32,000 times in B), this is a relatively small family.
VanGenechten also appears as Van Genechten.
If you need more information, please send me an e-mail.