Alexander Muir Mackenzie

He was born Alexander Muir in Perthshire on 2 March 1764 the son of George Muir of Cassencarrie House, in Kirkmabreck near Creetown^[1] and his wife, the Hon Margaret MacKenzie of Delvine.^[2]

He trained in Law and passed the Scottish bar as an advocate in 1788. In 1793 he was elected a Fellow of the Royal Society of Edinburgh. His proposers were Dugald Stewart, Dr James Gregory and Alexander Fraser Tytler, Lord Woodhouselee.^[3] In 1805 he inherited the estates of Delvine following the death of his wife's great uncle, John MacKenzie of Delvine. He was thereafter known as Sir Alexander Muir MacKenzie.^[4]

He died on 11 March 1835.

In 1787 he married Jane Murray, daughter of Sir Robert Murray, 6th baronet of Dunerne.^[4]

His only son, and successor was Sir John William Pitt Muir-MacKenzie (1806–1855),^[5] named in deference to William Pitt the Younger, the then prime minister. He also had eight daughters.