River Nene

The River Nene in the fens of eastern England is sometimes pronounced to rhyme with "Dean", sometimes with "den". A tweet from the Dean of Durham Cathedral, Michael Sadgove, prompted me to pen the following limerick:

    A Dean who had been to the Nene
    said "the scene on the Nene is serene";
       but a hen from her pen
       said "it's not Nene, it's Nen,
    'cos the Nen's in the Fens, my old bean."