The spelling should have been 'Adye' throughout. 'Cut and paste', ancient eyes and inattention are to blame. The hyphen appears to be incorrect. If one notes the middle names of Ralph's three brothers, one finds 'unusual' middle names. My Grandfather, on my mother's side, and his brothers were in a similar situation.
Again, both Kemp and the head stone give the 22.x.1804 date (NOT 1808) - see, we all make mistakes!
Yours, in firm research.