Yes it is sad that John and Emma died before they inherited their bequest. Hugh referred to them as his dear grandchildren in his will. Maybe Elizabeth and her children lived with her parents when she was widowed before remarrying??
Sadly Hugh and Hannah's child Ann appears to have died when young -
Ann Fletcher
Burial Date 23 Nov 1803 Allestree, St Edmund, Derbyshire
Father Hugh Fletcher
Mother Hannah Fletcher
Kay