Hi KR,
Most likely place of burial is Lee Chapel (Lee Lane Congregational Church) which was sold to developers and the graveyard has been demolished. I have a list of all the gravestones from here and there are no Morris's at all. They could be still be buried there and Bolton Archives have the records. Let me know if you would like me to look for you next time I'm in Bolton.
Ridgemont Cemetery did not open until 1928.
Regards, Tipps