Ebenezer is very difficult to find on the 1881 census
This could be him in 1881 with a change of first name:
London Road, High Wycombe
RG11/1465/11/15
Fredk Monger, lodger, unm, 22, carman, b. Bucks, Towersey
No birth reg for a Frederick Munger/Monger, only Ebenezer
Gadget