I am researching the Ellwood family, came across this today and registered with RootsChat to reply! John Ellwood & Margaret Ellwood (nee Nutt) are my g.g. grandparents. Their son Thomas, (my g.grandfather) was brother to the Matthew you mention. I too had Margaret Nutt's parents as probably Samuel Nutt & Agnes Nutt (nee Coupland) but haven't been able to go further back than John with any certainty. He was possibly the John Ellwood christened in Kendal on 10 April 1790 (Maragaret was born in 1800 in Kendal) and if so the line could be as follows:
Daniel Ellwood (b.1730 Kendal) m. Hannah Crewdson (b.1733 Kendal) in 1758: their son, also Daniel Ellwood (christened 10/6/1759) m. another Hannah (or Ann) and they were John Ellwood's parents.
Did you have any of this, and have you been abe to verify that this John is the right one? I'd also be interested to know what your connection is to these Ellwoods!