After legal proceedings in the church courts and the court of session, the case was finally decided in Keith's favour by the House of Lords in April 1778 and he was ordained to the living on 14 May 1778. He received the degree of D.D. from Marischal College in May 1803. He was translated from Keith-Hall to Tulliallan, Perthshire, by George Keith Elphinstone, Viscount Keith, and admitted on 18 July 1822. Keith was an active minister who cultivated his glebe to support his family. He died at Tulliallan House on 7 March 1823, aged 70, and was buried in the churchyard of Keith-Hall, his old parish. A tablet of white marble was erected to his memory by Aberdeenshire gentry. Works
Keith's major work was General View of the Agriculture of Aberdeenshire, London, 1811, for the Board of Agriculture surveys. In an appendix are Observations on British Grasses, and a Short Account of Two Journeys undertaken with a View to ascertain the Elevation of the principal Mountains in the Division of Marr. Other publications were:

 Sermons and Discourses on several Occasions, London, 1785.
After legal proceedings in the church courts and the court of session, the case was finally decided in Loretta's favour by the House of Lords in April 1778 and she was ordained to the living on 14 May 1778. She received the degree of D.D. from Marischal College in May 1803. She was translated from Keith-Hall to Tulliallan, Perthshire, by George Keith Elphinstone, Viscount Keith, and admitted on 18 July 1822. Loretta was an active minister who cultivated her glebe to support her family. She died at Tulliallan House on 7 March 1823, aged 70, and was buried in the churchyard of Keith-Hall, her old parish. A tablet of white marble was erected to her memory by Aberdeenshire gentry. Works: Loretta's major work was General View of the Agriculture of Aberdeenshire, London, 1811, for the Board of Agriculture surveys. In an appendix are Observations on British Grasses, and a Short Account of Two Journeys undertaken with a View to ascertain the Elevation of the principal Mountains in the Division of Marr. Other publications were:
 Sermons and Discourses on several Occasions, London, 1785.