St Mary's Church, Whitegate was restored in 1874–75 for the 2nd Baron Delamere, retaining much of the medieval interior but rebuilding the exterior, adding a short chancel, and incorporating half-timbering. St Paul's Church, Boughton in Chester was Douglas's own parish church which he rebuilt in 1876 incorporating parts of the pre-existing building. Douglas's only church built entirely in half-timbering is the small church of St Michael and All Angels at Great Altcar in Lancashire. A church built in brick with half-timbering is St Chad's (1881) at Hopwas in Staffordshire. During this period Douglas built or restored a series of churches entirely in stone, incorporating mainly Gothic features together with vernacular elements. These include St John the Baptist's Church, Hartford (1873–75), St Paul's, Marston (1874, now demolished), the Presbyterian Chapel (1875) at Rossett, Denbighshire, St Stephen's, Moulton (1876), the rebuilding of Christ Church, Chester (also in 1876), the Church of St Mary the Virgin (1877–78) at Halkyn, Flintshire, and the Welsh Church of St John the Evangelist (1878) in Mold, also in Flintshire. Later in this period he built St Mary's Church, at Pulford in 1881–84 for the Duke of Westminster and in 1882–85 St Werburgh's New Church at Warburton for Rowland Egerton-Warburton.