Kirklea (former Morton parish manse), Manse Road, Thornhill

Kirklea is a two-storey former parish manse dated 1847, located at the northeastern extent of Thornhill village in Dumfries and Galloway. It may have been designed by Burn and Bryce. The building is constructed in snecked, stugged and squared rubble with polished dressings and Tudor-style hoodmoulds around the window and door openings.

The principal southwest elevation is four bays wide, featuring a wide gabled bay on the right and two bays to the left with gabled dormer heads. An open entrance porch sits within an advanced gabled bay and contains an entrance door with fanlight and sidelights. The southeast elevation has a door leading onto a patio area and two pedimented dormers breaking the roof eaves. The northwest elevation has an advanced gable on the right-hand side and a single-storey and attic wing adjoining the northeast elevation, currently used as a garage.

Windows are predominantly sash and case windows with two-pane glazing. The roof is covered with graded slates and has stepped skews and moulded skewputts. Moulded finials top the dormer windows and gable apexes. The chimneystacks have grouped, square flues.

The interior retains decorative 19th-century features including moulded cornicing in the principal rooms, timber window shutters, some timber wainscoting and timber panelled doors. Several decorative fire surrounds are present, some being replacements. A curved timber staircase with polished and coiled timber handrail rises at the rear. The layout comprises principal rooms on either side of a central hallway.

To the northeast stands a large rubble-built walled garden with an opening in the southeast wall, following the sweep of the drive around the property. A single-storey byre range of snecked sandstone rubble, six bays wide, adjoins the walled garden. The byre features timber doors, some two-panel stable doors, with ventilation slits in the southwest elevation. Its roof is covered in corrugated sheeting with three rooflights on each pitch. The interior has whitewashed walls and exposed timber rafters and purlins.

Vehicular access is flanked by curving quadrant walls in ashlar sandstone with rounded coping stones, featuring a pair of square gatepiers with pyramidal caps and decorative iron gates. A sweeping driveway approaches the house, which is surrounded by mature trees and largely shielded from Manse Road.

Thornhill is a planned village laid out on a grid-plan in 1717 on the Queensberry estate. The original Morton Kirk and manse were built in 1781 and shown on Crawford's 1804 map of Dumfriesshire. The present church, manse and steading were built closer to Thornhill between 1841 and 1847, with the church opening for service on 10 October 1841. The patron was the Duke of Buccleuch. The manse was constructed around the same time as the church.

The 1856 Ordnance Survey map shows the church on the south side of the road and the manse and L-plan steading on the other side to the east of Thornhill village, with a walled garden and byre range between the manse and steading. The 1898 Ordnance Survey map shows the footprint largely unchanged until the early 20th century. A fire in 1904 affected the rear northwest section of the manse, causing the footprint to change from an asymmetrical U-shaped plan to a roughly L-shaped plan.

Kirklea and its associated walled garden and byre are privately owned (as of 2022) in separate ownership from the former agricultural steading building, Kirkwood Steading, which was converted into a private dwelling in the early 21st century and excluded from listing in January 2021.