Hello Gerard
I haven't looked at my Gaudern line for a while but from memory couldn't find a connection to the Hanslope Gauderns.
The name Gaudern (sometimes Gordon) has been used as a "christian" name for a number of my female ancestors since the marriage of Elizabeth Gaudern to William Linnell, my 3 x grt. grandparents. Going back on Elizabeth Gaudern's line most of the male Gauderns were Gamekeepers to the Earl of Westmorland on his various estates in Northamptonhire.
Sorry no male Gauderns in my line.
Susan