The medal card is also on ancestry.co.uk - Northumberland Fusiliers Cl P
Gives date of enlistment as 10 Nov 1914, date of discharge 8 Apr 1918
Also gives a cause of discharge - I think it's
A.0.265/14
2.B.I
Might be a site that helps decipher this abbreviation?
On 1911 census there's an Edward Lauderdale age 49 born Bellingham Northumberland , worker in coal mine, living at 45 Derwentside Cottages, Ebchester, Medomsley, Durham, with wife Mary and 2 daughters Ada Lauderdale, 10, and Sarah Wood Lauderdale, 5. Could this be him? (Census indicates there were 8 other children)