Patrick O’Dowd (A0966) appears on the 1851 census on this page along with a Catherine O’Dowd (A1300) who I assume is Patrick’s sister?

1851 UK Census: James McCormack

GRAMPS IDNAMERELATIONCONDITIONAGEOCCUPATIONWHERE BORN
1301JAMES McCORMACKHEADMARRIED76LABOURERIRELAND
1302BRIDGET McCORMACKWIFEMARRIED50IRELAND
1044CHARLES McCORMACKSON17IRELAND
1303JAMES McCORMACKSON14IRELAND
1304PATRICK McCORMACKSON10IRELAND
1305FRANK McCORMACKSON8IRELAND
1306MARTIN McCORMACKSON6IRELAND
1307MICHAEL BRENNENLODGER21IRELAND
1308CATHERINE BRENNENLODGER8IRELAND
1309ANN KELLYLODGER40IRELAND
966PATRICK O'DOWDLODGER8IRELAND
1300CATHERINE O'DOWDLODGER6IRELAND
1851: Census: HO107/2164/447
St Paul's, Northwich
Credit: The National Archive

1861 UK Census: Charles McCormack

GRAMPS IDNAMERELATIONCONDITIONAGEOCCUPATIONWHERE BORN
1044CHARLES McCORMACKHEADMARRIED28IRELAND
1045ROSE McCORMACKWIFEMARRIED26IRELAND
1861 Census: RG9/2616
Northwich Road
Monks Coppenhall, Crewe, Cheshire
Credit: The National Archive

1871 UK Census: Charles McCormack

GRAMPS IDNAMERELATIONCONDITIONAGEOCCUPATIONWHERE BORN
1044CHARLES McCORMACKHEADMARRIED38GROCER DEALERIRELAND
1045ROSE McCORMACKWIFEMARRIED33IRELAND
970JAMES McCORMACK
SON10SCHOLARCREWE CHESHIRE
1046FRANCIS McCORMACKSON5CREWE CHESHIRE
1047JOHN McCORMACKSON3CREWE CHESHIRE
1048JOHN McGOWANBROTHER-IN-LAWSINGLE17GROCERNANTWICH
1049KATHERINE KEARNEY13GROCERNANTWICH
1871 Census: RG10/3696
12 Cross Street
Northwich
Credit: The National Archive

1881 UK Census: James McCormack

GRAMPS IDNAMERELATIONCONDITIONAGEOCCUPATIONWHERE BORN
970 JAMES McCORMACKLODGER19GROCER'S APPRENTICECREWE CHESHIRE
1881 Census: RG11/3542/43
Moss Square, Monks Coppenhall Crewe
Credit: The National Archive
Lodger in the household of a Mary & Charles Bromfield

1891 UK Census: James McCormack

GRAMPS IDNAMERELATIONCONDITION AS TO MARRIAGEAGEOCCUPATIONWHERE BORN
970JAMES McCORMACKHEADMARRIED29LICENSED VICTUALLERCREWE
968MARY ELLEN McCORMACKWIFEMARRIED27BARNTON
971ROSA ANN McCORMACKDAUGHTER3NORTHWICH
1891 Census: RG12/2838
Seven Stars Public House
Church Street
Northwich
Credit: The National Archive

1901 UK Census: James Mccormack

GRAMPS IDNAMERELATIONSHIPCONDITIONAGEOCCUPATIONWHERE BORN
970JAMES McCORMACKHEADMARRIED39ALKALI LABOURERCREWE
968MARY ELLEN McCORMACKWIFEMARRIED37BARNTON
971ROSA ANN McCORMACKDAUGHTER13NORTHWICH
973MAY TERESA McCORMACKDAUGHTER7NORTHWICH
972ALICE McCORMACKDAUGHTER5NORTHWICH
975CATHERINE McCORMACKDAUGHTER3NORTHWICH
974WINIFRED McCORMACKDAUGHTER2NORTHWICH
976THOMAS MELIABOARDER33BRICKLAYER'S LABOURERNORTHWICH
1901 Census: RG13/3339
42 Huxley Street
Castle
Northwich
Credit: The National Archive