"Shows Miles death in the Atlantic Ocean."
Where? Are you seeing this on a tree or an actual record?
For info about researching deaths at sea, seehttp://yourarchives.nationalarchives.gov.uk/index.php?title
and listen to the podcast athttp://www.nationalarchives.gov.uk/podcasts/bmd-at-sea.htm
If your concern is that there was another Miles HODGSON, posting on the Northumberland message board may bring you some answers.