Hi,
This looks like the family of George and Elizabeth (nee HOLT) COOPER in 1841 and 1851,
1841 HO107/580/12 f.26 p.44&45 Manchester
Township: Chorlton Upon Medlock
Oxford Street
George COOPER 30 Corn Dealer N
Elizabeth " 30 N
William " 5 Y
Lydia " 3 Y
Sarah " 1 Y
Elizabeth " 1month Y
George " 15 M.S. N
Eliza HOLT 14 F.S. N
1851 Census of Chorlton-Upon-Medlock
HO107/2220 Civil Parish Manchester
24 Oxford Street
COOPER
George Head 45 Corn Dealer Derbyshire
Elizabeth Wife 40 Cheadle Cheshire
William Son 15 At Home Manchester Lancashire
Lydia Daur 13 At Home Chorlton Lancashire
Sarah Ann Daur 11 Scholar Chorlton Lancashire
Martha Daur 6 Scholar Chorlton Lancashire
George Henry Son 5 Scholar Chorlton Lancashire
and here is John in 1841, with the same couple who are his Uncle and Aunt in 1851,
1841 HO107/184/9 f.14 p.23 Eyam, Derbyshire
William COOPER 40 Farmer Yes
Sarah " 30 No
John " 4 Yes
I wonder if Sarah and John's birthplaces have been confused as in 1851 Sarah is born on Derbyshire and John in Lancashire.
The IGI has these baptisms which could show that George and William were brothers,
WILLIAM COOPER
Christening: 08 MAR 1795 Eyam, Derbyshire
George COOPER
Christening: 14 JUL 1805 Eyam, Derbyshire
both with,
Father: WILLIAM COOPER
Mother: MARTHA
Regards
Daisy