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This is probably him:
William Dugmore Mary Louisa Sidebottom JQ 1838 - Edmonton 3rd May 1838 St John, Hamstead, Middlesex William Dugmore to Mary Louisa Sidebottom 3rd May 1838 at St John Hamstead, Middlesex William Dugmore – Full age – Widower – Occupation – Barrister – Living at Bayswater – Father – John Dugmore – Occupation – Esquire Married Mary Louisa Sidebottom – Full age – Spinster – Gentlewoman – Living at Hamstead – Father – Edward Venner Sidebottom – Occupation – Barrister Witnesses are – E ? Sidebotton - Caroline ? - Horace Radcliff Sidebottom - Henrietta ? - John M Pearce ? Mary Pearce - John Dugmore and Sarah Sidebottom
http://www.ancestorsofbirmingham.com/dugmore/dugmore_marriages_1837_to_1850.htm
https://gw.geneanet.org/martinsmith?lang=fr&pz=martin+howard&nz=smith&p=william&n=dugmore
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