Edward Sang FRSE FRSSA LLD was a Scottish mathematician and civil engineer, best known for having computed large tables of logarithms, with the help of two of his daughters. These tables went beyond the tables of Henry Briggs, Adriaan Vlacq, and Gaspard de Prony.

David Cousin was a Scottish architect, landscape architect and planner, closely associated with early cemetery design and many prominent buildings in Edinburgh. From 1841 to 1872 he operated as Edinburgh’s City Superintendent of Works.