Hello, I know this is an old post, but I’m just starting my family tree journey -
I’m also looking for a Zadock Mellor who married an Annie Smith, with a son called Alfred b. 1912 who I believe was one of a whole list of children!
Just looking for any information!
Hello and welcome to Rootschat

From GRO indexes give mmn
MELLOR, ALFRED BERNARD
mmn SMITH 
1912 S Quarter in NORTHWICH Volume 08A Page 483
Marriages Sep 1896
Mellor Zadok Northwich 8a 444  
Smith Annie Northwich 8a 444  
1901 c
Zadok Mellor Head Male 33 Over, Cheshire chemical worker
Annie Mellor Wife Female 27 Over, Cheshire
Nellie Mellor Daughter Female 4 Leftwich, Cheshire
John Mellor Son Male 2 Leftwich, Cheshire
Joseph Mellor Son Male 1 Leftwich, Cheshire
From family search 1911
https://familysearch.org/ark:/61903/1:1:XW34-YVTZadok Mellor Head M 43 Over, Cheshire
Annie Mellor Wife F 37 Over, Cheshire
John Mellor Son M 12 Leftwich, Cheshire
Joseph Mellor Son M 11 Leftwich, Cheshire
Harry Mellor Son M 9 Leftwich, Cheshire
Fanny Mellor Daughter F 7 Leftwich, Cheshire
Tom Mellor Son M 5 Leftwich, Cheshire
Robert Mellor Son M 3 Moulton, Cheshire
Annie Mellor Daughter F 6 Moulton
Zadok Mellor occ labourer age 28
Father John deceased
Marriage 31 Aug 1896 Parish Church of Hartford
Spouse
Annie Smith age 24
Bride's father's John Smith deceased
Wits Thomas and Elizabeth Clare
Zadok Mellor Baptism 05 Jan 1868 Over, St John Cheshire
Father John Mellor Mother Fanny