My money's still on William Isaac Edge born Chorlton RD (which would be right for Gorton) in 1860. Mmn Cook per GRO. More research required...
Possible
1861, Chorlton upon Medlock
piece 2881 folio 19 page 31
https://www.familysearch.org/ark:/61903/1:1:M78V-S5JJohn Knight Head 42 Manager Railway Contractor, born Yorkshire
Martha Knight Wife 27 Shropshire Ellsmere (Ellesmere)
Louisa Knight Daur 3 Manchester
Edward Knight Son 1 Ashton under Lyne
Mary A Edge Visitor Married 29 Shropshire Ellsmere
William Edge Visitor 10 mo Manchester
Birth
KNIGHT, LOUISA
Mother's Maiden Surname: COOK
GRO Reference: 1857 D Quarter in CHORLTON Volume 08C Page 573
Marriage, 26 Oct 1856, Manchester St George
John Knight, Bachelor, Contractor
+
Martha Cooke, Spinster, father William Cooke, Confectioner
https://www.familysearch.org/ark:/61903/3:1:S3HT-61X3-C96