Thanks everyone! Going through in order.
Carolew: I have since found an Alfred, born on 7 Feb 1899, child of Marion Reynolds Brookson so out of marriage, baptised 23 Feb 1899 St Thomas Pendleton (am putting the details even though it's not my family in the end in case of use to others in the future)
Nannyjan: great, this confirms that Alfred & Marion were still together then. Brunswick Street, Gorton was the address on the 1911 census. Unfortunately this means I'm back to square one (or minus one!) with potentially "my" Alfred Wright.
Millmoor: thanks for the 1939 tip. I maybe should have mentioned, the "49 year old Alfred" was living at Cooper Street, Gorton. I had thought that after his divorce, he had just moved in Gorton. Maybe he wasn't even from the area in the end. So I need to find out where he was born, who his marriage was to and who the 12 and 13 year dependents were (there were no names on the 1921 census). Not much to go on..
Another avenue found on Lancashire opc Baptism: 25 Dec 1872 St Philip, Salford, Lancashire, England