The letter appears to have been addressed to Alexander Muir, a Linen and Draper mrechant. See Maybole 1837 Ayrshire Directory by Pigot & Co.  He was elected to the town council in 1822, Maybole Morsels-Maybole_Councillors 1722-1828 recorded on the Stent Rolls, and on the List of Burgesses 15th October 1834 .