 Another of the Commissioners was Sir Robert Lauder of Edrington, the Bishop's brother.Bishop Lauder spent a great deal of his time continuing to build Glasgow or St Mungo's Cathedral building several portions of it, notably the crypt under the chapter house where the Lauder Arms were carved in several places.He also added the stone steeple and battlement to the already built tower and placed his arms, with a cherub for a crest, on the centre panel of the western parapet.