Brian the Ancestry and Findmypast links are there for both the 1911 and 1921 census. If you don't have a sub to one or the other can perhaps access via a local library, posting images of the 1921 is not permitted. The address is on the cover sheet only, not also on the household schedule per 1911.
Widow Mrs Lambert & 4 children + 3 Saunders visitors at the same address, 14 Garnett Avenue, are the next image. I imagine that will match the birth cert image when you access.
Edward Keaney, Husband, Male, 31yrs 3 mths, Married, born Co. Leitrim, Kiltyclogher; Public Bar Assistant, employed by Peter Walker & Sons Brewer & Spirit Merchants of 331 Westminister Road, Kirkdale, Liverpool. No children under 16.
Mary Anne Keaney, Wife, Female, 28yrs 5 mths, Married, born Co. Leitrim, Kiltyclogher; Home Duties.
No mention of Edward living or working in Manchester in past conversations with family. He came straight from Ireland to Liverpool.
Think your family info is incorrect, a/a is not at family home or elsewhere in Ireland on the 1911 census. I'm confident that is him in Manchester. He either went home just to marry or had gone there following Discharge WW1 18 Feb 1920. He made a pension claim [neither Heywood or I can see the images as needs a sub fo ForcesWarRecords or Fold3] so perhaps suffered some effects, but did not did not get issued a Silver War Badge for injury preventing service during the war. At some stage he was admitted to No.31 Casualty Clearing Station that could have been for anything. However CCS 31 was in Salonica and that was where he earned his MM.
https://longlongtrail.co.uk/salonika-casualty-evacuation-chainhttps://greatwarforum.org/topic/287802-31st-casualty-clearing-station-location-1918
