Among other expansions were Ingelheim in 937, Spiesheim in 960, Saulheim in 973 and Flonheim in 996, until after the end of the expansion the Selz set the southern limit and the limit to the Wormsgau.
In the 10th century the Wormsgau lost wide middlerhenish zones, mostly to the benefit of the Nahegau, thereunder Ingelheim 937, Spiesheim 960, Saulheim 973 and Flonheim 996, until the Selz after the end of this schrinkage defined the northern limit.