 "Ooi" is also found in other names; Wadenoijen, Poederoyen and Ammerzoden (= Ammerzoyen).According to the same theory the name "Rhenoy" is a combination of "Rhenus" (=Rijn, Rhine river) followed again by "ooi".Others point out that "Acquoy" is mentioned in old scripts as Eckoy or Echoy and this would mean that it was the lowland of lord Akko or Ekko.