John Brightmore Mitchell-Withers FRIBA (1838–1894) was an architect based in Sheffield.
[1] He was born in 1838, the son of William Brightmore Mitchell (1805-1865) and Louisa Hodgson (1807-1862).
[2] He married Lisa MacIiveen (1838–1898) and they had the following children: He was educated at the Sheffield Collegiate School and studied architecture with Samuel Worth.
From approximately 1862, he was in partnership iwith William Blackmore as Blackmore and Mitchell-Withers[3] in offices in St James’ Street, Sheffield and Church Street, Rotherham.
He was also employed by the Duke of Devonshire to superintend the restoration of the painted ceilings in the state rooms of Chatsworth House.