Alexander Dyce Davidson (8 May 1807 – 27 April 1872) was born in Aberdeen in 1807, and spent his life there. To him more than to any other was due the transformation of religious opinion in Aberdeen from ‘moderatism’ to ‘evangelicalism,’ which led to the exodus of the city ministers and congregations at the Disruption of 1843. Davidson led the most influential congregation of the city into the Free church. Davidson was also an author leaving lectures on the Book of Esther and well as many sermons.