cath151, yes that would be our Edward Monaghan. Rechecking his discharge papers, he indicated that prior to joining the Kings Own Lancashire regiment in Dec 1866, he was in the Loyal North Lancs regiment (presumably the Militia).
It is interesting that he gave his address, in June 1866, as 71 Fleet Street, just next door to 69 Fleet Street quoted in the 1881 census record for 'Edward Monogue'. The odd thing is that he then gave the address of Ann 'Goulding' as next of kin in his enlistment in December as 81 Church Street. If his mother had moved from Fleet Street to Church Street in the previous six months then he must have been living at home or in contact with his mother.
So when did the Step-parents Edward and Susan come on the scene?
Added: I meant to ask, where did the Militia Record come from?