as James and Elizabeth were James parents in late 1700's in Ardwick I would suggest this is a possible sibling list for James bap 1790
Burial: 19 Dec 1785 St Thomas, Ardwick, Lancashire, England
Elizabeth Sidebottom - Daughter of James Sidebottom & Elizabeth
Age: 2 yrs.
Abode: Manchester
Cause of Death: S.p
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Baptism: 26 Feb 1786 St Thomas, Ardwick, Lancashire, England
Sarah Sidebottom - Daughter of James Sidebottom & Elizh.
Born: 30 Jan 1786
Abode: Manchester
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Baptism: 14 Sep 1788 St Thomas, Ardwick, Lancashire, England
Alice Sidebottom - Daughter of James Sidebottom & Elizh.
Abode: Manchester
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Baptism: 4 Aug 1793 St Thomas, Ardwick, Lancashire, England
Saml. Sidebottom - Son of Jas. Sidebottom & Elizth.
Abode: Manr.
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Burial: 4 Mar 1795 St Thomas, Ardwick, Lancashire, England
Mary Sidebottham - Daughter of James Sidebottham & Betty
Age: 13 years ....so wasn't baptised in St Thomas - no record shows
Abode: Manr.
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Burial: 7 Apr 1795 St Thomas, Ardwick, Lancashire, England
Saml. Sidebottham - Son of James Sidebottham & Elizth.
Age: 1 year 9 mon
Abode: Manchr.
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Baptism: 12 Jul 1795 St Thomas, Ardwick, Lancashire, England
Robert Sidebottham - Son of James Sidebottham & Betty
Abode: Manchr.
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Baptism: 10 Dec 1797 St Thomas, Ardwick, Lancashire, England
Mary Ann Sidebotham - Daughter of James Sidebotham & Eliz.
Abode: Manchr.
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that looks to be all records at St Thomas ,Ardwick ......looks to me like they didn' t live in Ardwick because abode each time says Manchester .....and as Mary who died aged 13 in 1795 was born in 1782 - she is not baptised in Ardwick St Thomas church - so I would suggest the family were not local to Ardwick in 1782 ........
http://www.lan-opc.org.uk/cgi-bin/mkindx.cgi?parish=Manchester&type=District&community=Ardwick