William Ingle was an architectural sculptor in Leeds, West Yorkshire, England. He specialised in delicately undercut bas relief and small stand-alone stone sculptures of natural and imaginary flora and fauna on churches and on civic, commercial and domestic buildings. He was apprenticed to his uncle Robert Mawer. After Mawer's death in 1854 he worked in partnership with his aunt Catherine Mawer and his cousin Charles Mawer in the company Mawer and Ingle. Notable works by Ingle exist on Leeds Town Hall, Endcliffe Hall, Sheffield and Moorlands House, Leeds. He sometimes exhibited gentle humour in his ecclesiastical work, such as faces peering through greenery, and mischievous humour on secular buildings, such as comic rabbits and frogs among foliage. He died of tuberculosis at age 41 years, having suffered the disease for two years.

Robert Mawer was an architectural sculptor, based in Leeds, West Yorkshire, England. He specialised in the Gothic Revival and Neoclassical styles. He created the Neoclassical keystone heads on St George's Hall, Bradford and on Moorland's House, Leeds, and was working on the keystone heads at Leeds Town Hall when he died. He was a founding member of the Mawer Group of Leeds architectural sculptors, which included his wife, Catherine Mawer, his son Charles Mawer, and his apprentices William Ingle, Matthew Taylor and Benjamin Payler, who all became sculptors with their own careers. Many of the buildings enhanced with sculpture by Robert Mawer are now listed by Historic England.