- Maintained by: Find A Grave
- Originally Created by: wrig
- Added: 4 Jun 2013
- Find A Grave Memorial 111810815
Find A Grave, database and images (https://www.findagrave.com : accessed ), memorial page for Jack O'Callaghan (unknown–4 Jan 1944), Find A Grave Memorial no. 111810815, citing Northwood Cemetery, Northwood, London Borough of Hillingdon, Greater London, England ; Maintained by Find A Grave (contributor 8) .